List of United Kingdom by-elections (1857–1868)

This is a list of parliamentary by-elections in the United Kingdom held between 1857 and 1868, with the names of the previous incumbent and the victor in the by-election and their respective parties. Where seats changed political party at the election, the result is highlighted: light blue for a Conservative gain, orange for a Whig (after 1859 Liberal) gain, and grey for any other gain.

Resignations

See Resignation from the British House of Commons for more details.

Where the cause of by-election is given as "resignation" or "seeks re-election", this indicates that the incumbent was appointed on his own request to an "office of profit under the Crown", either the Steward of the Chiltern Hundreds, the Steward of the Manor of Northstead or the Steward of the Manor of Hempholme. These appointments are made as a constitutional device for leaving the House of Commons, whose Members are not permitted to resign.

By-elections

By-election	Date	Former incumbent	Party		Winner	Party		Cause
Clitheroe	13 July 1868 [19 1]	Richard Fort		Liberal	Ralph Assheton		Conservative	Death
Stamford	24 June 1868 [19 1]	Viscount Ingestre		Conservative	William Unwin Heygate		Conservative	Succession to a peerage
Dublin City	1 June 1868 [19 1]	Benjamin Guinness		Conservative	Arthur Guinness		Conservative	Resignation
East Worcestershire	1 June 1868	Frederick Gough-Calthorpe		Liberal	Hon. Charles Lyttelton		Liberal	Succession to a peerage
Stamford	4 May 1868 [19 1]	Viscount Cranborne		Conservative	Viscount Ingestre		Conservative	Succession to a peerage
East Kent	2 May 1868	Brook Bridges		Conservative	Edward Leigh Pemberton		Conservative	Elevation to the peerage
Stirling Burghs	30 April 1868	Laurence Oliphant		Liberal	John Ramsay		Liberal	Resignation
Bristol	30 April 1868	Samuel Morton Peto		Liberal	John William Miles		Conservative	Resignation
South Lincolnshire	29 April 1868 [19 1]	John Trollope		Conservative	William Earle Welby		Conservative	Elevation to the peerage
Radnorshire	28 April 1868 [19 1]	John Walsh		Conservative	Arthur Walsh		Conservative	Elevation to the peerage
Leominster	27 April 1868 [19 1]	Arthur Walsh		Conservative	Viscount Mahon		Conservative	Resignation to contest Radnorshire
Grantham	27 April 1868	William Earle Welby		Conservative	Edmund Turnor		Conservative	Resignation to contest South Lincolnshire
Cockermouth	27 April 1868	John Steel		Liberal	Andrew Green Thompson		Conservative	Death
Wycombe	11 April 1868 [19 1]	Charles Carington		Liberal	William Carington		Liberal	Succession to a peerage
Launceston	9 April 1868 [19 1]	Alexander Henry Campbell		Conservative	Henry Lopes		Conservative	Resignation
Coventry	26 March 1868	Henry Jackson		Liberal	Samuel Carter		Liberal	Void election
Huddersfield	20 March 1868	Thomas Crosland		Liberal	Edward Aldam Leatham		Liberal	Death
North Northamptonshire	7 March 1868 [19 1]	George Ward Hunt		Conservative	George Ward Hunt		Conservative	Chancellor of the Exchequer [19 2]
Argyllshire	3 March 1868 [19 1]	Alexander Struthers Finlay		Liberal	Marquess of Lorne		Liberal	Resignation
Cambridge University	24 February 1868	Charles Jasper Selwyn		Conservative	Alexander Beresford Hope		Conservative	Resignation (Judge of the Court of Appeal in Chancery)
Stoke-upon-Trent	20 February 1868	Alexander Beresford Hope		Conservative	George Melly		Liberal	Resignation to contest Cambridge University
Helston	19 February 1868 [19 1]	William Brett		Conservative	William Brett		Conservative	Solicitor General for England and Wales [19 2]
Kirkcudbright	30 January 1868 [19 1]	James Mackie		Liberal	Wellwood Herries Maxwell		Liberal	Death
Westmorland	8 January 1868 [19 1]	Henry Lowther		Conservative	William Lowther		Conservative	Death
Thetford	2 December 1867 [19 1]	Alexander Baring		Conservative	Edward Gordon		Conservative	Resignation
South Leicestershire	30 November 1867	Charles William Packe		Conservative	Thomas Paget		Liberal	Death
Manchester	27 November 1867	Edward James		Liberal	Jacob Bright		Liberal	Death
Rutland	23 November 1867 [19 1]	Gilbert Heathcote		Liberal	George Finch		Conservative	Succession to a peerage
Bradford	16 October 1867	Henry Wickham Wickham		Conservative	Matthew William Thompson		Liberal	Death
Galway County	12 September 1867 [19 1]	Lord Dunkellin		Liberal	Viscount Burke		Liberal	Death
Dublin University	27 August 1867 [19 1]	Hedges Eyre Chatterton		Conservative	Robert Warren		Conservative	Resignation (Vice-Chancellor of Ireland)
Stroud	20 August 1867	George Poulett Scrope		Liberal	Henry Winterbotham		Liberal	Resignation
Downpatrick	5 August 1867 [19 1]	David Stewart Ker		Conservative	William Keown		Conservative	Resignation
West Gloucestershire	25 July 1867	John Rolt		Conservative	Edward Arthur Somerset		Conservative	Resignation (Lord Justice of Appeal)
Coventry	23 July 1867	Morgan Treherne		Conservative	Henry Jackson		Liberal	Death
Birmingham	23 July 1867	William Scholefield		Liberal	George Dixon		Liberal	Death
Andover	22 July 1867 [19 1]	John Burgess Karslake		Conservative	John Burgess Karslake		Conservative	Attorney General for England and Wales [19 2]
Cambridge University	22 July 1867 [19 1]	Charles Jasper Selwyn		Conservative	Charles Jasper Selwyn		Conservative	Solicitor General for England and Wales [19 2]
North Lancashire	1 July 1867 [19 1]	John Wilson-Patten		Conservative	John Wilson-Patten		Conservative	Chancellor of the Duchy of Lancaster [19 2]
Weymouth and Melcombe Regis	11 June 1867 [19 1]	Henry Gridley		Liberal	Henry Edwards		Liberal	Resignation
Sutherland	27 May 1867 [19 1]	David Dundas		Liberal	Lord Ronald Gower		Liberal	Resignation
Oxford University	20 May 1867 [19 1]	Gathorne Hardy		Conservative	Gathorne Hardy		Conservative	Home Secretary [19 2]
Middlesex	15 April 1867 [19 1]	Robert Culling Hanbury		Liberal	Henry Labouchère		Liberal	Death
Galway Borough	1 April 1867 [19 1]	Michael Morris		Conservative	George Morris		Liberal	Resignation (Puisne Judge of the Court of Common Pleas in Ireland)
Dublin University	30 March 1867 [19 1]	Hedges Eyre Chatterton		Conservative	Hedges Eyre Chatterton		Conservative	Attorney-General for Ireland [19 2]
Huntingdonshire	25 March 1867 [19 1]	Lord Robert Montagu		Conservative	Lord Robert Montagu		Conservative	Vice-President of the Committee on Education [19 2]
Tyrone	21 March 1867 [19 1]	Henry Lowry-Corry		Conservative	Henry Lowry-Corry		Conservative	First Lord of the Admiralty [19 2]
North Devon	18 March 1867 [19 1]	Stafford Northcote		Conservative	Stafford Northcote		Conservative	Secretary of State for India [19 2]
Boston	16 March 1867 [19 1]	Meaburn Staniland		Liberal	Thomas Parry		Liberal	Resignation
North Shropshire	14 March 1867 [19 1]	Adelbert Brownlow-Cust		Conservative	Viscount Newport		Conservative	Succession to a peerage
Droitwich	13 March 1867 [19 1]	John Pakington		Conservative	John Pakington		Conservative	Secretary of State for War [19 2]
South Shropshire	8 March 1867 [19 1]	Percy Egerton Herbert		Conservative	Percy Egerton Herbert		Conservative	Treasurer of the Household [19 2]
North Riding of Yorkshire	4 March 1867 [19 1]	William Duncombe		Conservative	Octavius Duncombe		Conservative	Succession to a peerage
Cork County	23 February 1867 [19 1]	George Richard Barry		Liberal	Arthur Smith-Barry		Conservative	Death
East Suffolk	20 February 1867	Sir Edward Kerrison		Conservative	Frederick Snowdon Corrance		Conservative	Resignation
Colchester	15 February 1867	Taverner John Miller		Conservative	Edward Karslake		Conservative	Resignation (Chief Justice of the Common Pleas)
North Northamptonshire	13 February 1867 [19 1]	Lord Burghley		Conservative	Sackville Stopford		Conservative	Succession to a peerage
Galway Borough	12 February 1867 [19 1]	Michael Morris		Conservative	Michael Morris		Conservative	Attorney General for Ireland [19 2]
Dublin University	12 February 1867 [19 1]	John Edward Walsh		Conservative	Hedges Eyre Chatterton		Conservative	Resignation (Master of the Rolls in Ireland)
Andover	11 February 1867 [19 1]	William Henry Humphery		Conservative	John Burgess Karslake		Conservative	Resignation
Armagh City	30 January 1867 [19 1]	Stearne Ball Miller		Conservative	John Vance		Conservative	Resignation (Judge in Bankruptcy in Ireland)
County Waterford	31 December 1866	Earl of Tyrone		Conservative	Edmond de la Poer		Liberal	Succession to a peerage
Guildford	17 December 1866	William Bovill		Conservative	Richard Garth		Conservative	Resignation (Chief Justice of the Common Pleas)
Pembrokeshire	26 November 1866 [19 1]	George Lort Phillips		Conservative	James Bevan Bowen		Conservative	Death
Belfast	22 November 1866	Hugh Cairns		Conservative	Charles Lanyon		Conservative	Resignation (Lord Justice of Appeal of England and Wales)
West Gloucestershire	15 November 1866 [19 1]	John Rolt		Conservative	John Rolt		Conservative	Attorney General for England and Wales [19 2]
County Wexford	15 November 1866	John George		Conservative	Arthur MacMorrough Kavanagh		Conservative	Resignation (Judge in Bankruptcy in Ireland)
Tipperary	22 October 1866	John Blake Dillon		Liberal	Charles William White		Liberal	Death
Penryn and Falmouth	15 October 1866	Thomas Baring		Liberal	Jervoise Smith		Liberal	Succession to a peerage
Brecon	3 October 1866	Earl of Brecknock		Liberal	Howel Gwyn		Conservative	Succession to a peerage
North Shropshire	17 August 1866 [19 1]	Charles Cust		Conservative	Adelbert Brownlow-Cust		Conservative	Resignation
Caenarvonshire	14 August 1866 [19 1]	Edward Douglas-Pennant		Conservative	George Douglas-Pennant		Conservative	Elevation to the peerage
Abingdon	6 August 1866 [19 1]	Charles Lindsay		Conservative	Charles Lindsay		Conservative	Groom in Waiting [19 2]
Galway Borough	2 August 1866	Michael Morris		Liberal	Michael Morris		Conservative	Solicitor General for Ireland [19 2]
Dublin University	30 July 1866 [19 1]	James Whiteside		Conservative	John Edward Walsh		Conservative	Resignation (Lord Chief Justice of Ireland)
Eye	27 July 1866 [19 1]	Edward Kerrison		Conservative	George Barrington		Conservative	Resignation to contest East Suffolk
East Suffolk	25 July 1866 [19 1]	The Lord Henniker		Conservative	John Henniker-Major		Conservative	Elevation to the peerage
		Fitzroy Kelly		Conservative	Edward Kerrison		Conservative	Resignation (Lord Chief Baron of the Exchequer)
Peeblesshire	24 July 1866 [19 1]	Graham Graham-Montgomery		Conservative	Graham Graham-Montgomery		Conservative	Lord Commissioner of the Treasury [19 2]
Petersfield	23 July 1866 [19 1]	William Jolliffe		Conservative	William Nicholson		Liberal	Elevation to the peerage
Hertfordshire	23 July 1866 [19 1]	Edward Bulwer-Lytton		Conservative	Abel Smith		Conservative	Elevation to the peerage
Bridgnorth	21 July 1866 [19 1]	Henry Whitmore		Conservative	Henry Whitmore		Conservative	Lord Commissioner of the Treasury [19 2]
Tyrone	20 July 1866 [19 1]	Lord Claud Hamilton		Conservative	Lord Claud Hamilton		Conservative	Vice-Chamberlain of the Household [19 2]
Tyrone	18 July 1866 [19 1]	Henry Lowry-Corry		Conservative	Henry Lowry-Corry		Conservative	Vice-President of the Committee of the Council on Education [19 2]
Cambridgeshire	17 July 1866 [19 1]	Viscount Royston		Conservative	Viscount Royston		Conservative	Comptroller of the Household [19 2]
Antrim	17 July 1866 [19 1]	George Henry Seymour		Conservative	George Henry Seymour		Conservative	Third Naval Lord [19 2]
North Essex	16 July 1866 [19 1]	Charles Du Cane		Conservative	Charles Du Cane		Conservative	Civil Lord of the Admiralty [19 2]
Rutlandshire	14 July 1866 [19 1]	Gerard Noel		Conservative	Gerard Noel		Conservative	Lord Commissioner of the Treasury [19 2]
North Northamptonshire	14 July 1866 [19 1]	Lord Burghley		Conservative	Lord Burghley		Conservative	Treasurer of the Household [19 2]
North Leicestershire	14 July 1866 [19 1]	Lord John Manners		Conservative	Lord John Manners		Conservative	First Commissioner of Works [19 2]
North Devon	14 July 1866 [19 1]	Stafford Northcote		Conservative	Stafford Northcote		Conservative	President of the Board of Trade [19 2]
New Shoreham	14 July 1866 [19 1]	Stephen Cave		Conservative	Stephen Cave		Conservative	Paymaster General and Vice-President of the Board of Trade [19 2]
Belfast	13 July 1866 [19 1]	Hugh Cairns		Conservative	Hugh Cairns		Conservative	Attorney General for England and Wales [19 2]
Buckinghamshire	13 July 1866 [19 1]	Benjamin Disraeli		Conservative	Benjamin Disraeli		Conservative	Chancellor of the Exchequer [19 2]
Oxford University	12 July 1866 [19 1]	Gathorne Hardy		Conservative	Gathorne Hardy		Conservative	President of the Poor Law Board [19 2]
Stamford	12 July 1866 [19 1]	Viscount Cranborne		Conservative	Viscount Cranborne		Conservative	Secretary of State for India [19 2]
		Sir John Dalrymple-Hay		Conservative	Sir John Dalrymple-Hay		Conservative	Fourth Naval Lord [19 2]
Bridgewater	12 July 1866	George Patton		Conservative	Philip Vanderbyl		Liberal	Lord Advocate [19 2]
Cambridge University	11 July 1866 [19 1]	Spencer Horatio Walpole		Conservative	Spencer Horatio Walpole		Conservative	Home Secretary [19 2]
King's Lynn	11 July 1866 [19 1]	Lord Stanley		Conservative	Lord Stanley		Conservative	Foreign Secretary [19 2]
Huntingdon	11 July 1866 [19 1]	Jonathan Peel		Conservative	Jonathan Peel		Conservative	Secretary of State for War [19 2]
Guildford	11 July 1866	William Bovill		Conservative	William Bovill		Conservative	Solicitor General for England and Wales [19 2]
Durham	11 July 1866 [19 1]	John Mowbray		Conservative	John Mowbray		Conservative	Judge Advocate General [19 2]
Droitwich	11 July 1866 [19 1]	John Pakington		Conservative	John Pakington		Conservative	First Lord of the Admiralty [19 2]
Cockermouth	11 July 1866 [19 1]	Lord Naas		Conservative	Lord Naas		Conservative	Chief Secretary for Ireland [19 2]
Hertford	30 June 1866 [19 1]	Walter Townshend-Farquhar		Conservative	Robert Dimsdale		Conservative	Death
South Nottinghamshire	18 June 1866 [19 1]	Lord Stanhope		Conservative	Thomas Thoroton-Hildyard		Conservative	Succession to a peerage
Bridgewater	7 June 1866	Henry Westropp		Conservative	George Patton		Conservative	Void election
County Waterford	7 June 1866 [19 1]	John Esmonde		Liberal	John Esmonde		Liberal	Lord Commissioner of the Treasury [19 2]
Winchester	4 June 1866	John Bonham-Carter		Liberal	John Bonham-Carter		Liberal	Lord Commissioner of the Treasury [19 2]
Devonport	22 May 1866	William Ferrand		Conservative	Lord Eliot		Liberal	Void election
		John Fleming		Conservative	Montague Chambers		Liberal	Void election
Kildare	21 May 1866 [19 1]	Lord Otho FitzGerald		Liberal	Lord Otho FitzGerald		Liberal	Treasurer of the Household [19 2]
Aberdeenshire	15 May 1866	William Leslie		Conservative	William Dingwall Fordyce		Liberal	Resignation
Nottingham	11 May 1866	Robert Juckes Clifton		Liberal	Ralph Bernal Osborne		Liberal	Void election
		Samuel Morley		Liberal	Viscount Amberley		Liberal	Void election
Northallerton	10 May 1866	Charles Mills		Conservative	Egremont Lascelles		Conservative	Void election
North Devon	9 May 1866 [19 1]	Charles Trefusis		Conservative	Stafford Northcote		Conservative	Succession to a peerage
Windsor	9 May 1866 [19 1]	Sir Henry Hoare		Liberal	Charles Edwards		Liberal	Void election
		Henry Labouchère		Liberal	Roger Eykyn		Liberal	Void election
Stamford	8 May 1866 [19 1]	Stafford Northcote		Conservative	Sir John Dalrymple-Hay		Conservative	Resignation to Contest North Devon
Sandwich	8 May 1866	Lord Clarence Paget		Liberal	Charles Capper		Conservative	Resignation
Reading	5 May 1866 [19 1]	George Shaw-Lefevre		Liberal	George Shaw-Lefevre		Liberal	Civil Lord of the Admiralty [19 2]
Helston	1 May 1866 [19 3]	Adolphus William Young		Liberal	Robert Campbell		Liberal	Void election
		Robert Campbell		Liberal	William Brett		Conservative	By-election result reversed on petition
Cambridge	24 April 1866	William Forsyth		Conservative	John Eldon Gorst		Conservative	Void election
Ripon	28 March 1866 [19 1]	Lord John Hay		Liberal	Lord John Hay		Liberal	Fifth Naval Lord [19 2]
Honiton	28 March 1866 [19 1]	Frederick Goldsmid		Liberal	Julian Goldsmid		Liberal	Death
Wigan	27 March 1866	James Alexander Lindsay		Conservative	Nathaniel Eckersley		Conservative	Resignation
Western Worcestershire	24 March 1866 [19 1]	Frederick Lygon		Conservative	William Edward Dowdeswell		Conservative	Succession to a peerage
County Louth	22 March 1866 [19 1]	Chichester Parkinson-Fortescue		Liberal	Chichester Parkinson-Fortescue		Liberal	Chief Secretary for Ireland [19 2]
Tewkesbury	20 March 1866	William Edward Dowdeswell		Conservative	Sir Edmund Lechmere		Conservative	Resignation to contest Western Worcestershire
Kerry	16 March 1866 [19 1]	Henry Arthur Herbert		Liberal	Henry Arthur Herbert		Liberal	Death
Richmond	6 March 1866	John Dundas		Liberal	Marmaduke Wyvill		Liberal	Death
County Limerick	1 March 1866 [19 1]	William Monsell		Liberal	William Monsell		Liberal	Vice-President of the Board of Trade and Paymaster General [19 2]
North Lancashire	28 February 1866 [19 1]	Marquess of Hartington		Liberal	Marquess of Hartington		Liberal	Secretary of State for War [19 2]
Tiverton	28 February 1866	The Viscount Palmerston		Liberal	George Denman		Liberal	Death
Sunderland	28 February 1866	Henry Fenwick		Liberal	John Candlish		Liberal	Civil Lord of the Admiralty [19 2]
Brecon	27 February 1866 [19 1]	John Lloyd Vaughan Watkins		Liberal	Earl of Brecknock		Liberal	Death
Ripon	26 February 1866 [19 1]	Sir Charles Wood		Liberal	Lord John Hay		Liberal	Resignation pending elevation to the peerage
Leominster	26 February 1866 [19 1]	Gathorne Hardy		Conservative	Richard Arkwright		Conservative	Double election, chose to sit for Oxford University
City of London	26 February 1866 [19 1]	George Joachim Goschen		Liberal	George Joachim Goschen		Liberal	Chancellor of the Duchy of Lancaster [19 2]
An uncontested by-election. Seat vacated on appointment to the office noted. Both Robert Campbell and William Brett polled exactly the same number of votes. The mayor, as returning officer, gave his casting vote for the Liberal candidate Robert Campbell. As this vote was given after four o'clock, however, an appeal was lodged, and the House of Commons declared that the returning officer had no right to a casting vote, and that he should have returned the names of both tied candidates. On scrutiny of the votes, one vote was struck off Campbell's total, and the Conservative candidate William Brett declared duly elected.
By-election	Date	Former incumbent	Party		Winner	Party		Cause
Devonport	22 June 1865	Arthur William Buller		Liberal	Thomas Brassey		Liberal	Resignation to contest Liskeard
Liskeard	21 June 1865 [18 1]	Ralph Bernal Osborne		Liberal	Arthur William Buller		Liberal	Resignation
Coventry	21 June 1865 [18 1]	Joseph Paxton		Liberal	Henry Eaton		Conservative	Death
Lambeth	9 May 1865 [18 1]	William Williams		Liberal	James Lawrence		Liberal	Death
Clackmannanshire and Kinross-shire	20 April 1865 [18 1]	William Patrick Adam		Liberal	William Patrick Adam		Liberal	Lord of the Treasury [18 2]
Wigtown Burghs	15 April 1865 [18 1]	William Dunbar		Liberal	George Young		Liberal	Resignation (Commissioner for Auditing the Public Accounts)
Rochdale	15 April 1865	Richard Cobden		Liberal	Thomas Bayley Potter		Liberal	Death
Louth	15 April 1865	Richard Montesquieu Bellew		Liberal	Tristram Kennedy		Liberal	Resignation (Commissioner of Poor Laws in Ireland)
South Shropshire	12 April 1865 [18 1]	Viscount Newport		Conservative	Percy Egerton Herbert		Conservative	Succession to a peerage
Evesham	4 April 1865 [18 1]	Henry Willoughby		Conservative	James Bourne		Conservative	Death
North Devon	1 April 1865 [18 1]	James Wentworth Buller		Liberal	Thomas Dyke Acland		Liberal	Death
North Wiltshire	20 March 1865 [18 1]	Thomas H. Sotheron-Estcourt		Conservative	Lord Charles Bruce		Liberal	Resignation
Tipperary	24 February 1865	Daniel O'Donoghue		Liberal	Charles Moore		Liberal	Resignation to contest Tralee
Lancaster	20 February 1865 [18 1]	Samuel Gregson		Liberal	Henry Schneider		Liberal	Death
Truro	14 February 1865	Montague Edward Smith		Conservative	Frederick Williams		Conservative	Resignation (Judge of the Court of Common Pleas)
Tralee	14 February 1865	Thomas O'Hagan		Liberal	Daniel O'Donoghue		Liberal	Resignation (Judge of the Court of Common Pleas in Ireland)
Cork City	14 February 1865 [18 1]	Francis Lyons		Liberal	Nicholas Daniel Murphy		Liberal	Resignation
Salford	13 February 1865 [18 1]	William Nathaniel Massey		Liberal	John Cheetham		Liberal	Resignation (Council of India)
Buteshire	6 February 1865	David Mure		Conservative	George Boyle		Conservative	Resignation (Senator of the College of Justice)
North Warwickshire	13 December 1864 [18 1]	Richard Spooner		Conservative	William Bromley-Davenport		Conservative	Death
West Suffolk	8 December 1864 [18 1]	Earl Jermyn		Conservative	Lord Augustus Hervey		Conservative	Succession to a peerage
Carmarthen Boroughs	31 October 1864 [18 1]	David Morris		Liberal	William Morris		Liberal	Death
Hastings	6 October 1864	Lord Harry George Vane		Liberal	George Waldegrave-Leslie		Liberal	Succession to a peerage
Exeter	4 August 1864	Edward Divett		Liberal	Lord Courtenay		Conservative	Death
East Gloucestershire	12 July 1864 [18 1]	Christopher William Codrington		Conservative	Michael Hicks Beach		Conservative	Death
North Durham	28 June 1864 [18 1]	Lord Adolphus Vane-Tempest		Conservative	Hedworth Williamson		Liberal	Death
Gloucester	25 May 1864 [18 1]	John Joseph Powell		Liberal	John Joseph Powell		Liberal	Recorder of Wolverhampton [18 2]
Stockport	9 May 1864 [18 1]	James Kershaw		Liberal	Edward Watkin		Liberal	Death
Merthyr Tydfil	25 April 1864 [18 1]	Henry Austin Bruce		Liberal	Henry Austin Bruce		Liberal	Vice-President of the Committee on Education [18 2]
Pontefract	20 April 1864 [18 1]	Hugh Childers		Liberal	Hugh Childers		Liberal	Civil Lord of the Admiralty [18 2]
Fife	19 April 1864 [18 1]	James Hay Erskine Wemyss		Liberal	Robert Anstruther		Liberal	Death
Devizes	18 April 1864 [18 1]	William Addington		Conservative	Thomas Bateson		Conservative	Succession to a peerage
Lancaster	13 April 1864	William James Garnett		Conservative	Edward Matthew Fenwick		Liberal	Resignation
Oxford	9 April 1864 [18 1]	Edward Cardwell		Liberal	Edward Cardwell		Liberal	Secretary of State for the Colonies [18 2]
County Armagh	23 March 1864 [18 1]	Maxwell Charles Close		Conservative	James Stronge		Conservative	Resignation
Hertfordshire	14 March 1864	Christopher William Puller		Liberal	Henry Surtees		Conservative	Death
Dorset	27 February 1864 [18 1]	Henry Ker Seymer		Conservative	John Floyer		Conservative	Resignation
Brighton	16 February 1864	William Coningham		Liberal	Henry Moor		Conservative	Resignation
Winchester	10 February 1864 [18 1]	James Buller East		Conservative	Thomas Willis Fleming		Conservative	Resignation
Tewkesbury	9 February 1864 [18 1]	Frederick Lygon		Conservative	John Yorke		Conservative	Resignation to contest West Worcestershire.
Durham City	9 February 1864 [18 1]	William Atherton		Liberal	John Henderson		Liberal	Death
Buckinghamshire	29 December 1863	William George Cavendish		Liberal	Robert Bateson Harvey		Conservative	Succession to a peerage
Andover	18 November 1863	William Cubitt		Conservative	William Humphery		Conservative	Death
Oxford	7 November 1863 [18 1]	James Haughton Langston		Liberal	Charles Neate		Liberal	Death
Windsor	4 November 1863	George William Hope		Conservative	Richard Henry Howard Vyse		Conservative	Death
West Worcestershire	26 October 1863 [18 1]	Viscount Elmley		Conservative	Frederick Lygon		Conservative	Succession to a peerage
Barnstaple	20 October 1863	George Potts		Liberal	Thomas Lloyd		Liberal	Death
		Thomas Lloyd		Liberal	Richard Bremridge		Conservative	By-election result reversed on petition
Richmond	17 October 1863 [18 1]	Roundell Palmer		Liberal	Roundell Palmer		Liberal	Attorney General for England and Wales [18 2]
Reading	17 October 1863 [18 1]	Gillery Pigott		Liberal	George Shaw-Lefevre		Liberal	Resignation (Baron of the Court of the Exchequer)
Plymouth	17 October 1863 [18 1]	Robert Collier		Liberal	Robert Collier		Liberal	Solicitor General for England and Wales [18 2]
Tamworth	12 October 1863	Viscount Raynham		Liberal	John Peel		Conservative	Succession to a peerage
Coventry	8 October 1863	Edward Ellice		Liberal	Morgan Treherne		Conservative	Death
Ludlow	28 August 1863	Beriah Botfield		Conservative	William Fraser		Conservative	Death
Montgomery Boroughs	20 August 1863	John Willes-Johnson		Conservative	Charles Hanbury-Tracy		Liberal	Death
Pontefract	3 August 1863 [18 1]	Richard Monckton Milnes		Liberal	Samuel Waterhouse		Conservative	Elevation to the peerage
Clare	3 August 1863 [18 1]	Francis Macnamara Calcutt		Liberal	Colman O'Loghlen		Liberal	Death
Berwick-upon-Tweed	29 June 1863	Charles William Gordon		Conservative	William Walter Cargill		Conservative	Death
Lisburn	26 June 1863	John Doherty Barbour		Liberal	Edward Wingfield Verner		Conservative	Void By-election
New Ross	8 June 1863	Charles Tottenham (II)		Conservative	Charles George Tottenham		Conservative	Resignation
Kinsale	8 June 1863	John Arnott		Liberal	George Conway Colthurst		Independent Liberal (Liberal-Conservative) [1]	Resignation
City of London	2 June 1863 [18 1]	Western Wood		Liberal	George Joachim Goschen		Liberal	Death
Tralee	15 May 1863 [18 1]	Daniel O'Connell Jnr		Liberal	Thomas O'Hagan		Liberal	Resignation
Antrim	6 May 1863 [18 1]	George Upton		Conservative	Edward O'Neill		Conservative	Succession to an Irish peerage
Halifax	28 April 1863 [18 1]	James Stansfeld		Liberal	James Stansfeld		Liberal	Civil Lord of the Admiralty [18 2]
Radnor Boroughs	25 April 1863 [18 1]	George Cornewall Lewis		Liberal	Richard Green-Price		Liberal	Death
Dublin County	22 April 1863 [18 1]	James Hans Hamilton		Conservative	Ion Hamilton		Conservative	Resignation
Thetford	21 April 1863	Earl of Euston		Liberal	Lord Frederick FitzRoy		Liberal	Succession to a peerage
North Lancashire	24 March 1863 [18 1]	Marquess of Hartington		Liberal	Marquess of Hartington		Liberal	Civil Lord of the Admiralty [18 2]
Bandon	27 February 1863	William Smyth Bernard		Conservative	Henry Boyle Bernard		Conservative	Death
Lisburn	23 February 1863	Jonathan Joseph Richardson		Conservative	John Doherty Barbour		Liberal	Resignation
Chichester	21 February 1863 [18 1]	Humphrey William Freeland		Liberal	John Abel Smith		Liberal	Resignation
Devizes	18 February 1863	John Neilson Gladstone		Conservative	William Addington		Conservative	Death
West Somerset	17 February 1863 [18 1]	Charles Moody		Conservative	William Gore-Langton		Conservative	Resignation
Cambridgeshire	14 February 1863 [18 1]	Edward Ball		Conservative	Lord George Manners		Conservative	Resignation
Devonport	12 February 1863	Michael Seymour		Liberal	William Ferrand		Conservative	Resignation
Cambridge	12 February 1863	Andrew Steuart		Conservative	Francis Powell		Conservative	Resignation
Reigate	6 February 1863	William John Monson		Liberal	Granville William Gresham Leveson-Gower		Liberal	Succession to a peerage
Totnes	20 January 1863	George Hay		Liberal	Alfred Seymour		Liberal	Death
East Kent	5 January 1863	William Deedes		Conservative	Edward Dering		Liberal	Death
Andover	17 December 1862 [18 1]	Henry Beaumont Coles		Conservative	William Cubitt		Conservative	Death
Totnes	9 December 1862	Thomas Mills		Liberal	John Pender		Liberal	Death
Southampton	6 December 1862	Brodie McGhie Willcox		Liberal	William Anderson Rose		Conservative	Death
Stoke-upon-Trent	23 September 1862	John Lewis Ricardo		Liberal	Henry Grenfell		Liberal	Death
County Carlow	7 August 1862 [18 1]	William McClintock-Bunbury		Conservative	Denis Pack-Beresford		Conservative	Resignation
Kirkcaldy Burghs	25 July 1862 [18 1]	Robert Ferguson		Liberal	Roger Sinclair Aytoun		Liberal	Resignation
Montgomeryshire	14 July 1862	Herbert Watkin Williams-Wynn		Conservative	Charles Watkin Williams-Wynn		Conservative	Death
Shrewsbury	2 June 1862	Robert Aglionby Slaney		Liberal	Henry Robertson		Liberal	Death
Kidderminster	27 May 1862	Alfred Rhodes Bristow		Liberal	Luke White		Liberal	Resignation
Oldham	5 May 1862 [18 1]	William Johnson Fox		Liberal	John Tomlinson Hibbert		Liberal	Resignation
Lambeth	5 May 1862	William Roupell		Liberal	Frederick Doulton		Liberal	Resignation
Preston	4 April 1862	Richard Assheton Cross		Conservative	Thomas Hesketh		Conservative	Resignation
Wycombe	18 March 1862	George Dashwood		Liberal	John Remington Mills		Liberal	Death
North Riding of Yorkshire	17 March 1862	Edward Stillingfleet Cayley		Liberal	William Morritt		Conservative	Death
Longford	7 March 1862	Luke White		Liberal	Myles William O'Reilly		Liberal	Lord of the Treasury [18 2]
Canterbury	6 March 1862	Henry Butler-Johnstone		Conservative	Henry Munro-Butler-Johnstone		Conservative	Resignation
Wakefield	28 February 1862	William Henry Leatham		Liberal	John Charles Dalrymple Hay		Conservative	Void election
Gloucester	26 February 1862	Charles James Monk		Liberal	Charles Berkeley		Liberal	Void election
		William Philip Price		Liberal	John Joseph Powell		Liberal	Void election
Leicester	17 February 1862 [18 1]	John Biggs		Liberal	Peter Alfred Taylor		Liberal	Resignation
Great Grimsby	14 February 1862	Lord Worsley		Liberal	John Chapman		Conservative	Succession to a peerage
Lincoln	12 February 1862	George Heneage		Liberal	John Bramley-Moore		Conservative	Resignation to contest Great Grimsby
New Shoreham	5 February 1862 [18 1]	Charles Burrell		Conservative	Percy Burrell		Conservative	Death
Oxfordshire	3 February 1862	George Harcourt		Liberal	John Fane		Conservative	Death
Coleraine	31 January 1862 [18 1]	John Boyd		Conservative	Henry Bruce		Conservative	Death
Nottingham	26 December 1861	John Mellor		Liberal	Robert Juckes Clifton		Liberal	Resignation (Justice of the Court of the King's Bench)
East Worcestershire	20 December 1861 [18 1]	John Hodgetts-Foley		Liberal	Harry Vernon		Liberal	Death
Finsbury	17 December 1861	Thomas Slingsby Duncombe		Liberal	William Cox		Liberal	Death
Birkenhead	11 December 1861	N/A		N/A	John Laird		Conservative	Birkenhead enfranchised
Carlisle	26 November 1861	James Graham		Liberal	Edmund Potter		Liberal	Death
Lincoln	9 November 1861 [18 1]	Gervaise Tottenham Waldo Sibthorp		Conservative	Charles Seely		Liberal	Death
Plymouth	31 October 1861	Viscount Valletort		Conservative	Walter Morrison		Liberal	Succession to a peerage
South Lancashire	19 August 1861	N/A		N/A	Charles Turner		Conservative	South Lancashire granted a third seat
Selkirkshire	1 August 1861	Allen Eliott-Lockhart		Conservative	Lord Henry Scott		Conservative	Resignation
Tamworth	31 July 1861 [18 1]	Robert Peel		Liberal	Robert Peel		Liberal	Chief Secretary for Ireland [18 2]
Morpeth	31 July 1861 [18 1]	George Grey		Liberal	George Grey		Liberal	Home Secretary [18 2]
Oxford	30 July 1861 [18 1]	Edward Cardwell		Liberal	Edward Cardwell		Liberal	Chancellor of the Duchy of Lancaster [18 2]
City of London	29 July 1861	Lord John Russell		Liberal	Western Wood		Liberal	Resignation (elevated to the peerage)
Andover	29 July 1861 [18 1]	William Cubitt		Conservative	Henry Beaumont Coles		Conservative	Resignation to contest City of London
Richmond	9 July 1861 [18 1]	Henry Rich		Liberal	Roundell Palmer		Liberal	Resignation
Durham City	8 July 1861 [18 1]	William Atherton		Liberal	William Atherton		Liberal	Attorney General for England and Wales [18 2]
Longford	4 July 1861 [18 1]	Henry White		Liberal	Luke White		Liberal	Resignation
Wolverhampton	3 July 1861	Sir Richard Bethell		Liberal	Thomas Matthias Weguelin		Liberal	Appointed Lord Chancellor [18 2]
Southwark	30 May 1861	Thomas Lloyd-Mostyn		Liberal	Lord Richard Grosvenor		Liberal	Death
Montgomery Boroughs	4 May 1861 [18 1]	David Pugh		Conservative	John Willes-Johnson		Conservative	Death
Banffshire	1 May 1861 [18 1]	Lachlan Gordon-Duff		Liberal	Robert William Duff		Liberal	Resignation
Southwark	24 April 1861 [18 1]	John Locke		Liberal	John Locke		Liberal	Recorder of Brighton [18 2]
Tynemouth and North Shields	23 April 1861	Hugh Taylor		Conservative	Richard Hodgson		Conservative	Resignation
Marylebone	19 April 1861	Edwin James		Liberal	John Harvey Lewis		Liberal	Resignation
Tiverton	28 March 1861 [18 1]	The Viscount Palmerston		Liberal	The Viscount Palmerston		Liberal	Lord Warden of the Cinque Ports [18 2]
Sutherland	27 March 1861 [18 1]	Marquess of Stafford		Liberal	David Dundas		Liberal	Succession to a peerage
County Cork	28 February 1861	Rickard Deasy		Liberal	Nicholas Leader		Conservative	Resignation (Baron of the Exchequer in Ireland)
Pembroke Boroughs	22 February 1861	Sir John Owen		Liberal	Sir Hugh Owen		Liberal	Death
South Wiltshire	14 February 1861 [18 1]	Sidney Herbert		Liberal	Frederick Hervey-Bathurst		Conservative	Elevation to the peerage
Aberdeenshire	13 February 1861	Lord Haddo		Liberal	Walter Barttelot		Conservative	Succession to a peerage
Bradford	11 February 1861 [18 1]	Titus Salt		Liberal	William Edward Forster		Liberal	Resignation
Bolton	11 February 1861 [18 1]	Joseph Crook		Liberal	Thomas Barnes		Liberal	Resignation
Leicester	7 February 1861	Joseph William Noble		Liberal	William Unwin Heygate		Conservative	Death
Pembrokeshire	19 January 1861	Viscount Emlyn		Conservative	George Lort Phillips		Conservative	Succession to a peerage
West Sussex	27 December 1860 [18 1]	Earl of March		Conservative	Walter Barttelot		Conservative	Succession to a peerage
Ripon	22 December 1860	John Ashley Warre		Liberal	Reginald Vyner		Liberal	Death
South Nottinghamshire	18 December 1860 [18 1]	Viscount Newark		Conservative	Lord Stanhope		Conservative	Succession to a peerage
Southwark	12 December 1860	Charles Napier		Liberal	Austen Henry Layard		Liberal	Death
Newcastle-upon-Tyne	7 December 1860	George Ridley		Liberal	Somerset Beaumont		Liberal	Resignation (Inclosure Commissioner)
Wick Burghs	1 December 1860 [18 1]	Samuel Laing		Liberal	Viscount Bury		Liberal	Resignation (Council of India)
Reading	21 November 1860	Francis Pigott		Liberal	Gillery Pigott		Liberal	Resignation (Lieutenant Governor of the Isle of Man)
Dartmouth	3 November 1860	John Dunn		Conservative	John Hardy		Conservative	Death
Boston	30 October 1860	Herbert Ingram		Liberal	John Malcolm		Conservative	Death
Honiton	22 October 1860 [18 1]	Joseph Locke		Liberal	George Moffatt		Liberal	Death
Ludlow	4 September 1860 [18 1]	Percy Egerton Herbert		Conservative	George Windsor-Clive		Conservative	Resignation
West Cumberland	27 August 1860 [18 1]	Henry Wyndham		Conservative	Percy Wyndham		Conservative	Death
Sligo Borough	9 August 1860	John Arthur Wynne		Conservative	Francis Macdonogh		Conservative	Resignation
Stafford	3 August 1860	John Ayshford Wise		Liberal	Thomas Sidney		Liberal	Resignation
Donegal	17 July 1860 [18 1]	Edmund Hayes		Conservative	Viscount Hamilton		Conservative	Death
Brighton	16 July 1860	George Brooke-Pechell		Liberal	James White		Liberal	Death
Belfast	15 June 1860 [18 1]	Richard Davison		Conservative	Samuel Gibson Getty		Conservative	Resignation
Lymington	24 May 1860	Sir John Rivett-Carnac		Conservative	Lord George Gordon-Lennox		Conservative	Resignation
Berkshire	2 May 1860 [18 1]	Leicester Viney Vernon		Conservative	Richard Benyon		Conservative	Death
Harwich	24 April 1860 [18 1]	William Campbell		Liberal	Richard Rowley		Conservative	Succession to a peerage
Clare	13 April 1860	Luke White		Liberal	Francis Macnamara Calcutt		Liberal	Void election
Londonderry City	2 April 1860	Robert Ferguson		Liberal	William McCormick		Conservative	Death
Norwich	28 March 1860 [18 1]	Viscount Bury		Liberal	William Russell		Liberal	Void election
		Henry William Schneider		Liberal	Edward Warner		Liberal	Void election
Roscommon	26 March 1860 [18 1]	Thomas William Goff		Conservative	Charles Owen O'Conor		Liberal	Void election
Worcester	12 March 1860 [18 1]	William Laslett		Liberal	Richard Padmore		Liberal	Resignation
West Surrey	10 March 1860 [18 1]	Henry Drummond		Conservative	George Cubitt		Conservative	Death
County Cork	5 March 1860	Rickard Deasy		Liberal	Rickard Deasy		Liberal	Attorney General for Ireland [18 2]
Ennis	20 February 1860 [18 1]	John FitzGerald		Liberal	William Stacpoole		Liberal	Resignation (Judge of the Court of the Queen's Bench in Ireland)
Hertford	13 February 1860 [18 1]	William Cowper		Liberal	William Cowper		Liberal	First Commissioner of Works [18 2]
Gateshead	13 February 1860 [18 1]	William Hutt		Liberal	William Hutt		Liberal	Vice-President of the Board of Trade and Paymaster General [18 2]
Forfarshire	1 February 1860 [18 1]	Viscount Duncan		Liberal	Charles Carnegie		Liberal	Succession to a peerage
Scarborough	1 February 1860	William Denison		Liberal	John Dent Dent		Liberal	Succession to a peerage
Pontefract	31 January 1860	William Overend		Conservative	Hugh Childers		Liberal	Resignation (arbitrator recommended resignation after contested election)
Beverly	31 January 1860 [18 1]	Ralph Walters		Liberal	James Walker		Conservative	Void election
Lewes	16 January 1860 [18 1]	Henry Fitzroy		Liberal	John Blencowe		Liberal	Death
Reading	11 January 1860	Henry Singer Keating		Liberal	Francis Goldsmid		Liberal	Resignation (Justice of the Court of Common Pleas)
Liskeard	9 January 1860 [18 1]	William Atherton		Liberal	William Atherton		Liberal	Solicitor General for England and Wales [18 2]
Whitby	23 November 1859	Robert Stephenson		Conservative	Harry Stephen Thompson		Liberal	Death
Ayrshire	31 October 1859	Lord Patrick Crichton-Stuart		Liberal	James Fergusson		Conservative	Death
South Shropshire	14 September 1859 [18 1]	Robert Windsor-Clive		Conservative	Baldwin Leighton		Conservative	Death
Kingston upon Hull	20 August 1859	Joseph Hoare		Conservative	Joseph Somes		Conservative	Void election
Berwick-upon-Tweed	20 August 1859	Ralph Anstruther Earle		Conservative	Dudley Marjoribanks		Liberal	Resignation (in exchange for withdrawal of election petition)
Liskeard	18 August 1859 [18 1]	Ralph Grey		Liberal	Ralph Bernal Osborne		Liberal	Resignation
Hertford	18 August 1859	William Cowper		Liberal	William Cowper		Liberal	Vice-President of the Board of Trade and Paymaster General [18 2]
Devonport	17 August 1859	James Wilson		Liberal	Arthur William Buller		Liberal	Resignation
Bodmin	13 August 1859 [18 1]	William Michell		Conservative	James Wyld		Liberal	Resignation (in exchange for withdrawal of election petition)
Taunton	9 August 1859	Henry Labouchere		Liberal	George Cavendish-Bentinck		Conservative	Resignation (Elevation to the peerage)
Devonport	9 August 1859	Thomas Erskine Perry		Liberal	Michael Seymour		Liberal	Resignation (Council of India)
Dartmouth	8 August 1859 [18 1]	Edward Wyndham Harrington Schenley		Liberal	John Dunn		Conservative	Void election
Wicklow	18 July 1859 [18 1]	Lord Proby		Liberal	Lord Proby		Liberal	Comptroller of the Household [18 2]
Wolverhampton	9 July 1859 [18 1]	Charles Pelham Villiers		Liberal	Charles Pelham Villiers		Liberal	President of the Poor Law Board [18 2]
Ashton-under-Lyne	9 July 1859 [18 1]	Thomas Milner Gibson		Liberal	Thomas Milner Gibson		Liberal	President of the Board of Trade [18 2]
Marylebone	7 July 1859	Benjamin Hall		Liberal	Edmond Roche		Liberal	Elevation to the peerage
West Gloucestershire	7 July 1859 [18 1]	Robert Kingscote		Liberal	Robert Kingscote		Liberal	Groom in Waiting [18 2]
Lichfield	6 July 1859 [18 1]	Lord Alfred Paget		Liberal	Lord Alfred Paget		Liberal	Chief Equerry and Clerk Marshal [18 2]
Northampton	5 July 1859 [18 1]	Robert Vernon Smith		Liberal	The Lord Henley		Liberal	Elevation to the peerage
Kerry	5 July 1859 [18 1]	Viscount Castlerosse		Liberal	Viscount Castlerosse		Liberal	Vice-Chamberlain of the Household [18 2] [18 3]
County Cork	5 July 1859 [18 1]	Rickard Deasy		Liberal	Rickard Deasy		Liberal	Solicitor General for Ireland [18 2]
Oxford University	1 July 1859	William Ewart Gladstone		Peelite	William Ewart Gladstone		Liberal	Chancellor of the Exchequer [18 2]
Monmouthshire	1 July 1859 [18 1]	Edward Arthur Somerset		Conservative	Poulett Somerset		Conservative	Resignation
Clonmel	1 July 1859 [18 1]	John Bagwell		Liberal	John Bagwell		Liberal	Lord Commissioner of the Treasury [18 2]
Ennis	29 June 1859 [18 1]	John FitzGerald		Liberal	John FitzGerald		Liberal	Attorney General for Ireland [18 2]
Cork	29 June 1859 [18 1]	William Trant Fagan		Liberal	Francis Lyons		Liberal	Death
South Wiltshire	29 June 1859 [18 1]	Sidney Herbert		Liberal	Sidney Herbert		Liberal	Secretary of State for War and Secretary at War [18 2]
Edinburgh	28 June 1859 [18 1]	James Moncreiff		Liberal	James Moncreiff		Liberal	Lord Advocate [18 2]
Sandwich	28 June 1859	Edward Knatchbull-Hugessen		Liberal	Edward Knatchbull-Hugessen		Liberal	Lord Commissioner of the Treasury [18 2]
Norwich	28 June 1859	Viscount Bury		Liberal	Viscount Bury		Liberal	Treasurer of the Household [18 2] [18 4]
Newcastle upon Tyne	28 June 1859	Thomas Emerson Headlam		Liberal	Thomas Emerson Headlam		Liberal	Judge Advocate General [18 2]
Halifax	28 June 1859 [18 1]	Charles Wood		Liberal	Charles Wood		Liberal	Secretary of State for India [18 2]
Bedford	28 June 1859	Samuel Whitbread		Liberal	Samuel Whitbread		Liberal	Civil Lord of the Admiralty [18 2]
Wigtown Burghs	27 June 1859 [18 1]	William Dunbar		Liberal	William Dunbar		Liberal	Lord Commissioner of the Treasury [18 2]
Radnor Boroughs	27 June 1859 [18 1]	George Cornewall Lewis		Liberal	George Cornewall Lewis		Liberal	Home Secretary [18 2]
Wolverhampton	27 June 1859 [18 1]	Richard Bethell		Liberal	Richard Bethell		Liberal	Attorney General for England and Wales [18 2]
Tiverton	27 June 1859 [18 1]	The Viscount Palmerston		Liberal	The Viscount Palmerston		Liberal	Prime Minister and First Lord of the Treasury [18 2]
Reading	27 June 1859 [18 1]	Henry Singer Keating		Liberal	Henry Singer Keating		Liberal	Solicitor General for England and Wales [18 2]
Oxford	27 June 1859 [18 1]	Edward Cardwell		Liberal	Edward Cardwell		Liberal	Chief Secretary for Ireland [18 2]
Morpeth	27 June 1859 [18 1]	George Grey		Liberal	George Grey		Liberal	Chancellor of the Duchy of Lancaster [18 2]
Lewes	27 June 1859 [18 1]	Henry Fitzroy		Liberal	Henry Fitzroy		Liberal	First Commissioner of Works [18 2]
Devonport	27 June 1859 [18 1]	James Wilson		Liberal	James Wilson		Liberal	Vice-President of the Board of Trade and Paymaster General [18 2]
Calne	27 June 1859 [18 1]	Robert Lowe		Liberal	Robert Lowe		Liberal	Vice-President of the Committee of the Council on Education [18 2]
Ashton-under-Lyne	27 June 1859 [18 1]	Thomas Milner Gibson		Liberal	Thomas Milner Gibson		Liberal	President of the Poor Law Board [18 2]
City of London	27 June 1859 [18 1]	Lord John Russell		Liberal	Lord John Russell		Liberal	Foreign Secretary [18 2]
An uncontested by-election. Seat vacated on appointment to the office noted. According to the writ of election the by-election cause was Castlerosse being appointed Treasurer of the Household. However according to the London Gazette he does not appear to have actually been appointed to that office but was instead appointed Vice-Chamberlain of the Household. According to the writ of election the by-election cause was Bury being appointed Comptroller of the Household. However according to the London Gazette he does not appear to have actually been appointed to that office but was instead appointed Treasurer of the Household.
By-election	Date	Former incumbent	Party		Winner	Party		Cause
Harwich	18 March 1859	John Bagshaw		Whig	Henry Jervis-White-Jervis		Conservative	Resignation
Stirlingshire	14 March 1859 [17 1]	Peter Blackburn		Conservative	Peter Blackburn		Conservative	Junior Lord of the Treasury [17 2]
North Northumberland	10 March 1859 [17 1]	Lord Lovaine		Conservative	Lord Lovaine		Conservative	Vice-President of the Board of Trade and Paymaster General [17 2]
West Sussex	9 March 1859 [17 1]	Earl of March		Conservative	Earl of March		Conservative	President of the Poor Law Board [17 2]
North Wiltshire	8 March 1859 [17 1]	Thomas H. Sotheron-Estcourt		Conservative	Thomas H. Sotheron-Estcourt		Conservative	Home Secretary [17 2]
Tewkesbury	8 March 1859	Frederick Lygon		Conservative	Frederick Lygon		Conservative	Civil Lord of the Admiralty [17 2]
Bury St. Edmunds	7 March 1859 [17 1]	Earl Jermyn		Conservative	Lord Alfred Hervey		Conservative	Succession to a peerage
Midhurst	3 March 1859 [17 1]	Samuel Warren		Conservative	John Hardy		Conservative	Resignation
Marylebone	25 February 1859	Viscount Ebrington		Whig	Edwin James		Whig	Resignation and elevation to the House of Lords through a Writ of acceleration
East Worcestershire	24 February 1859	George Rushout		Conservative	Frederick Gough-Calthorpe		Whig	Succession to a peerage
West Riding of Yorkshire	21 February 1859 [17 1]	Viscount Goderich		Whig	John Ramsden		Whig	Succession to a peerage
Enniskillen	21 February 1859	James Whiteside		Conservative	John Lowry Cole		Conservative	Resignation in order to contest Dublin University
Greenwich	16 February 1859	John Townsend		Whig	David Salomons		Whig	Resignation
Hythe	15 February 1859 [17 1]	John Ramsden		Whig	Mayer Amschel de Rothschild		Whig	Resignation in order to contest the West Riding of Yorkshire
Oxford University	12 February 1859 [17 1]	William Ewart Gladstone		Peelite	William Ewart Gladstone		Peelite	Resignation (Lord High Commissioner of the Ionian Islands)
Galway Borough	11 February 1859 [17 1]	Anthony O'Flaherty		Whig	John Orrell Lever		Conservative	Void election
Dublin University	11 February 1859 [17 1]	George Alexander Hamilton		Conservative	James Whiteside		Conservative	Resignation
Banbury	9 February 1859	Henry William Tancred		Whig	Bernhard Samuelson		Whig	Resignation
Linlithgowshire	5 February 1859 [17 1]	George Dundas		Conservative	Charles Baillie		Conservative	Resignation (Lieutenant Governor of Prince Edward Island)
Boston	3 February 1859 [17 1]	William Henry Adams		Conservative	William Henry Adams		Conservative	Recorder of Derby [17 2]
Breconshire	28 December 1858 [17 1]	Joseph Bailey		Conservative	Godfrey Morgan		Conservative	Death
Herefordshire	18 December 1858 [17 1]	Thomas William Booker-Blakemore		Conservative	Lord Montagu Graham		Conservative	Death
Manchester	17 November 1858 [17 1]	John Potter		Whig	Thomas Bazley		Whig	Death
Reigate	23 October 1858	Henry Rawlinson		Whig	William Monson		Whig	Resignation (Council of India)
Leominster	22 October 1858 [17 1]	John Willoughby		Conservative	Charles Bateman-Hanbury		Conservative	Resignation (Council of India)
Guildford	22 October 1858	Ross Donnelly Mangles		Whig	Guildford Onslow		Whig	Resignation (Council of India)
North Cheshire	7 August 1858 [17 1]	William Egerton		Conservative	Wilbraham Egerton		Conservative	Resignation
South Devon	6 August 1858 [17 1]	John Yarde-Buller		Conservative	Samuel Trehawke Kekewich		Conservative	Resignation and elevation to the peerage
Stamford	17 July 1858 [17 1]	John Inglis		Conservative	Stafford Northcote		Conservative	Resignation (Lord Justice Clerk)
West Cornwall	5 July 1858 [17 1]	Michael Williams		Whig	John St Aubyn		Whig	Death
East Norfolk	1 July 1858	Edward Buxton		Whig	Wenman Coke		Whig	Death
Hertfordshire	8 June 1858 [17 1]	Edward Bulwer-Lytton		Conservative	Edward Bulwer-Lytton		Conservative	Secretary of State for the Colonies [17 2]
King's Lynn	5 June 1858 [17 1]	Lord Stanley		Conservative	Lord Stanley		Conservative	President of the Board of Control [17 2]
Limerick City	21 May 1858 [17 1]	George Gavin		Whig	James Spaight		Conservative	Void By-Election
Leitrim	17 May 1858 [17 1]	Hugh Lyons-Montgomery		Conservative	William Ormsby-Gore		Conservative	Resignation
Dublin University	27 March 1858	Joseph Napier		Conservative	Anthony Lefroy		Conservative	Resignation (Lord Chancellor of Ireland)
City Durham	17 March 1858 [17 1]	John Mowbray		Conservative	John Mowbray		Conservative	Judge Advocate General [17 2]
Tyrone	11 March 1858 [17 1]	Lord Claud Hamilton		Conservative	Lord Claud Hamilton		Conservative	Treasurer of the Household [17 2]
North Northumberland	11 March 1858 [17 1]	Lord Lovaine		Conservative	Lord Lovaine		Conservative	Civil Lord of the Admiralty [17 2]
County Dublin	11 March 1858 [17 1]	Thomas Edward Taylor		Conservative	Thomas Edward Taylor		Conservative	Junior Lord of the Treasury [17 2]
South Shropshire	9 March 1858 [17 1]	Viscount Newport		Conservative	Viscount Newport		Conservative	Vice-Chamberlain of the Household [17 2]
Enniskillen	9 March 1858 [17 1]	James Whiteside		Conservative	James Whiteside		Conservative	Attorney-General for Ireland [17 2]
North Staffordshire	8 March 1858 [17 1]	Charles Adderley		Conservative	Charles Adderley		Conservative	Vice-President of the Committee of the Council on Education and President of the Board of Health [17 2]
North Leicestershire	8 March 1858 [17 1]	Lord John Manners		Conservative	Lord John Manners		Conservative	First Commissioner of Works [17 2]
Buckinghamshire	8 March 1858 [17 1]	Benjamin Disraeli		Conservative	Benjamin Disraeli		Conservative	Chancellor of the Exchequer [17 2]
East Suffolk	6 March 1858 [17 1]	Fitzroy Kelly		Conservative	Fitzroy Kelly		Conservative	Attorney General for England and Wales [17 2]
Oxfordshire	6 March 1858 [17 1]	Joseph Warner Henley		Conservative	Joseph Warner Henley		Conservative	President of the Board of Trade [17 2]
Chichester	6 March 1858 [17 1]	Lord Henry Lennox		Conservative	Lord Henry Lennox		Conservative	Junior Lord of the Treasury [17 2]
North Wiltshire	5 March 1858 [17 1]	Thomas H. Sotheron-Estcourt		Conservative	Thomas H. Sotheron-Estcourt		Conservative	President of the Poor Law Board [17 2]
Belfast	5 March 1858 [17 1]	Hugh Cairns		Conservative	Hugh Cairns		Conservative	Solicitor General for England and Wales [17 2]
King's Lynn	4 March 1858 [17 1]	Lord Stanley		Conservative	Lord Stanley		Conservative	Secretary of State for the Colonies [17 2]
Huntingdon	4 March 1858 [17 1]	Jonathan Peel		Conservative	Jonathan Peel		Conservative	Secretary of State for War and Secretary at War [17 2]
Cambridge University	4 March 1858 [17 1]	Spencer Horatio Walpole		Conservative	Spencer Horatio Walpole		Conservative	Home Secretary [17 2]
Wenlock	3 March 1858 [17 1]	George Weld-Forester		Conservative	George Weld-Forester		Conservative	Comptroller of the Household [17 2]
Stamford	3 March 1858 [17 1]	Sir Frederic Thesiger		Conservative	John Inglis		Conservative	Appointed Lord Chancellor [17 2]
Droitwich	3 March 1858 [17 1]	Sir John Pakington		Conservative	Sir John Pakington		Conservative	First Lord of the Admiralty [17 2]
Cockermouth	3 March 1858 [17 1]	Lord Naas		Conservative	Lord Naas		Conservative	Chief Secretary for Ireland [17 2]
Bridgnorth	3 March 1858 [17 1]	Henry Whitmore		Conservative	Henry Whitmore		Conservative	Junior Lord of the Treasury [17 2]
Wicklow	25 February 1858 [17 1]	Viscount Milton		Whig	Lord Proby		Whig	Succession to a peerage
South Northamptonshire	20 February 1858	Viscount Althorp		Whig	Henry Cartwright		Conservative	Succession to a peerage
Limerick City	15 February 1858	James O'Brien		Whig	George Gavin		Whig	Resignation (Justice of the Court of Queen's Bench in Ireland)
Reigate	6 February 1858	William Hackblock		Independent Whig [2] [3]	Henry Rawlinson		Whig	Death
Mayo	30 December 1857 [17 1]	George Henry Moore		Independent Irish	Lord John Browne		Whig	Void election
Buckinghamshire	28 December 1857	Charles Compton Cavendish		Whig	William George Cavendish		Whig	Resignation and elevation to the peerage
Elgin Burghs	19 December 1857 [17 1]	George Skene Duff		Whig	M. E. Grant Duff		Whig	Resignation
Whitehaven	17 December 1857 [17 1]	Robert Charles Hildyard		Conservative	George Lyall		Conservative	Death
North Northamptonshire	16 December 1857	Augustus Stafford		Conservative	George Ward Hunt		Conservative	Death
Scarborough	14 December 1857	Earl of Mulgrave		Whig	John Dent Dent		Whig	Resignation
Ashton-under-Lyne	14 December 1857	Charles Hindley		Whig	Thomas Milner Gibson		Whig	Death
Paisley	11 December 1857	Archibald Hastie		Whig	Humphrey Crum-Ewing		Whig	Death
East Kent	10 December 1857 [17 1]	Sir Edward Dering		Whig	William Deedes		Conservative	Resignation
Thetford	9 December 1857 [17 1]	Francis Baring		Conservative	Alexander Baring		Conservative	Resignation
Harwich	9 December 1857	George Drought Warburton		Independent Whig [4] [5]	Robert John Bagshaw		Whig	Death
Oldham	19 October 1857 [17 1]	James Platt		Whig	William Johnson Fox		Whig	Death
Tavistock	4 September 1857	George Henry Charles Byng		Whig	Lord Arthur Russell		Whig	Resignation to contest Middlesex
Middlesex	3 September 1857 [17 1]	Lord Robert Grosvenor		Whig	George Henry Charles Byng		Whig	Elevation to the peerage
Beverley	11 August 1857	Edward Auchmuty Glover		Whig	Henry Edwards		Conservative	Void election
Great Yarmouth	10 August 1857 [17 1]	William McCullagh Torrens		Independent Whig [6] [7] [8]	Adolphus William Young		Whig	Void election
		Edward Watkin		Whig	John Mellor		Whig	Void election
Birmingham	10 August 1857 [17 1]	George Frederic Muntz		Whig	John Bright		Whig	Death
Falkirk Burghs	8 August 1857 [17 1]	James Merry		Whig	John Glencairn Carter Hamilton		Whig	Void election
City of London	28 July 1857 [17 1]	Lionel de Rothschild		Whig	Lionel de Rothschild		Whig	Seeks re-election following the rejection of the Jewish Disabilities Bill
Woodstock	24 July 1857 [17 1]	Marquess of Blandford		Conservative	Lord Alfred Spencer-Churchill		Conservative	Succession to a peerage
Oxford	21 July 1857	Charles Neate		Whig	Edward Cardwell		Peelite	Void election
Banffshire	30 June 1857 [17 1]	The Earl Fife		Whig	Lachlan Gordon-Duff		Whig	Resignation
Carmarthenshire	12 June 1857 [17 1]	David Arthur Saunders Davies		Conservative	David Pugh		Conservative	Death
Kerry	9 June 1857 [17 1]	Henry Arthur Herbert		Whig	Henry Arthur Herbert		Whig	Chief Secretary for Ireland [17 2]
Leeds	5 June 1857	Robert Hall		Conservative	George Skirrow Beecroft		Conservative	Death
Reading	2 June 1857 [17 1]	Henry Singer Keating		Whig	Henry Singer Keating		Whig	Solicitor General for England and Wales [17 2]
Penryn and Falmouth	27 May 1857 [17 1]	Thomas George Baring		Whig	Thomas George Baring		Whig	Civil Lord of the Admiralty [17 2]
An uncontested by-election. Seat vacated on appointment to the office noted.

References

1. "Death of George Colthurst". The Times. 26 September 1878. p. 8.
2. "Election Intelligence" . Morning Advertiser. 12 March 1857. p. 3 – via British Newspaper Archive.
3. "Electioneering Intelligence" . Sussex Advertiser. 17 March 1857. p. 7 – via British Newspaper Archive.
4. Courtney, William Prideaux (1899). "Warburton, George Drought"  . In Lee, Sidney (ed.). Dictionary of National Biography . Vol. 59. London: Smith, Elder & Co.
5. Elizabeth Waterston. "George Drought Warburton". Dictionary of Canadian Biography .
6. Howe, Anthony; Morgan, Simon; Bannerman, Gordon, eds. (2007). The Letters of Richard Cobden: Volume II ~ 1848–1853. Oxford: Oxford University Press. p. 284. ISBN   978-0-19-921196-8.
7. MacDonagh, Michael (1899). "Torrens, William Torrens McCullagh"  . In Lee, Sidney (ed.). Dictionary of National Biography . Vol. 57. London: Smith, Elder & Co.
8. Eldridge, C. C. (1973). "England's Mission". England's Mission: The Imperial Idea in the Age of Gladstone & Disraeli, 1868–1880. London: Palgrave Macmillan. p. 118. ISBN   978-1-349-01879-6.

• List of MPs since 1660 ^{[ usurped ]}
• British Parliamentary election Results 1832-1885, compiled and edited by F. W. S. Craig (Macmillan Press 1977)
• F. W. S. Craig, British Parliamentary election Statistics 1832-1987
• F. W. S. Craig, Chronology of British Parliamentary By-elections 1833-1987
• Parliamentary election Results in Ireland, 1801-1922, edited by B. M. Walker (Royal Irish Academy 1978)