Caerphilly (Senedd constituency)

Not to be confused with Caerphilly (UK Parliament constituency).

Caerphilly Caerffili
Senedd county constituency for the Senedd
Caerphilly shown as one of the 40 Senedd constituencies
Current Senedd county constituency
Created	1999
Party	Vacant
MS	Vacant
Electoral region	South Wales East

Caerphilly (Welsh : Caerffili) is a constituency of the Senedd. It elects one Member of the Senedd by the first past the post method of election. It is additionally one of eight constituencies in the South Wales East electoral region, which elects four additional members, in addition to eight constituency members, to produce a degree of proportional representation for the region as a whole.

Boundaries

Map of current boundaries

The constituency was created for the first election to the Assembly, in 1999, with the name and boundaries of the Caerphilly Westminster constituency prior to the 2023 review of Westminster constituencies.

The other seven constituencies of the South Wales East electoral region are Blaenau Gwent, Islwyn, Merthyr Tydfil and Rhymney, Monmouth, Newport East, Newport West and Torfaen.

Voting

In general elections for the Senedd, each voter has two votes. The first vote may be used to vote for a candidate to become the Member of the Senedd for the voter's constituency, elected by the first past the post system. The second vote may be used to vote for a regional closed party list of candidates. Additional member seats are allocated from the lists by the d'Hondt method, with constituency results being taken into account in the allocation.

Assembly members and Members of the Senedd

Election		Member	Party
	1999	Ron Davies	Labour
	2003	Jeffrey Cuthbert
	2016	Hefin David

A by-election is going to be held on Thursday 23 October 2025, following the death of Hefin David in August 2025.

Results

Elections in the 2020s

2021 Senedd election: Caerphilly ^[1]

Party		Candidate	Constituency			Regional
			Votes	%	±%	Votes	%	±%
	Labour	Hefin David [a]	13,289	46.0	+10.7	11,230	38.7	+4.0
	Plaid Cymru	Delyth Jewell	8,211	28.4	–1.1	8,277	28.5	+2.6
	Conservative	Steven Mayfield	5,013	17.3	+8.4	5,172	17.8	+7.7
	Abolish	Stephen Jones	1,119	3.9	New	1,134	3.9	+0.8
	Green					1,074	3.7	+1.3
	Liberal Democrats	Steven Aicheler	787	2.7	+1.3	644	2.2	+0.3
	Reform UK	Tim Price	495	1.7	New	342	1.2	New
	UKIP					505	1.7	–18.8
	Gwlad					180	0.6	New
	No More Lockdowns					174	0.6	New
	Propel					115	0.4	New
	Communist					86	0.3	±0.0
	TUSC					71	0.2	–0.1
Majority			5,078	17.6	+11.8
Turnout			28,914	44.31 [2]	+1.0
	Labour hold		Swing
Notes Incumbent member for this constituency

Regional Ballot void votes: 145. Want of an Official Mark (0), Voting for more than ONE party or individual candidate (71), Writing or mark by which the Voter could be identified (4), Unmarked or Void for uncertainty (145)

Elections in the 2010s

Welsh Assembly Election 2016: Caerphilly

Party		Candidate	Constituency [3]			Regional [4]
			Votes	%	±%	Votes	%	±%
	Labour	Hefin David	9,584	35.3	–13.7	9,416	34.7	–9.3
	Plaid Cymru	Lindsay Whittle	8,009	29.5	–0.2	7,013	25.9	–0.4
	UKIP	Sam Gould	5,954	22.0	New	5,555	20.5	+16.7
	Conservative	Jane Pratt	2,412	8.9	−4.3	2,728	10.1	–1.7
	Green	Andrew Creak	770	2.8	New	651	2.4	+0.2
	Liberal Democrats	Aladdin Ayesh	386	1.4	–2.8	526	1.9	–1.7
	Abolish					830	3.1	New
	Monster Raving Loony					177	0.7	New
	TUSC					91	0.3	New
	Communist					74	0.3	±0.0
	National Front					50	0.2	New
Majority			1,575	5.8	–13.5
Turnout			27,115	43.3	+1.8
	Labour hold		Swing

Welsh Assembly Election 2011: Caerphilly

Party		Candidate	Constituency [5]			Regional [6]
			Votes	%	±%	Votes	%	±%
	Labour	Jeffrey Cuthbert	12,521	49.0	+14.4	11,251	44.0	+6.7
	Plaid Cymru	Ronald Davies	7,597	29.7	+3.9	6,717	26.3	+2.2
	Conservative	Owen Meredith	3,368	13.2	+1.9	3,016	11.8	–0.3
	Liberal Democrats	Kay David	1,062	4.2	–1.9	917	3.6	–2.3
	BNP	Anthony King	1,022	4.0	New	1,042	4.1	–1.0
	UKIP					983	3.8	–0.8
	Socialist Labour					633	2.5	+1.1
	Green					551	2.2	–0.6
	Welsh Christian					335	1.3	±0.0
	Communist					77	0.3	–0.1
	English Democrat					38	0.1	–0.1
Majority			4,924	19.3	+10.5
Turnout			25,570	41.5	–0.6
	Labour hold		Swing	+5.2

Regional ballots rejected at the count: 143 ^[7]

Elections in the 2000s

Welsh Assembly Election 2007: Caerphilly

Party		Candidate	Constituency			Regional [8]
			Votes	%	±%	Votes	%	±%
	Labour	Jeffrey Cuthbert	9,026	34.6	–10.8	9,707	37.3	–9.8
	Plaid Cymru	Lindsay Whittle	6,739	25.8	–2.2	6,287	24.1	+0.9
	Independent	Ronald Davies	5,806	22.2	New
	Conservative	Richard Foley	2,954	11.3	+1.2	3,149	12.1	+0.7
	Liberal Democrats	Huw Price	1,596	6.1	+1.1	1,601	6.1	–1.4
	BNP					1,380	5.1	+3.8
	UKIP					1,201	4.6	+1.2
	Independent - Colin Hobbs					1,061	4.1	New
	Green					736	2.8	+0.4
	Socialist Labour					356	1.4	–0.8
	Welsh Christian Party					347	1.3	New
	Communist					95	0.4	New
	CPA					66	0.3	New
	English Democrat					52	0.2	New
Majority			2,287	8.8	–10.8
Turnout			26,120	42.1	+5.1
	Labour hold		Swing	–4.3

Welsh Assembly Election 2003: Caerphilly

Party		Candidate	Constituency			Regional [9]
			Votes	%	±%	Votes	%	±%
	Labour	Jeffrey Cuthbert	11,893	47.1	+2.9	11,956	47.1	+9.5
	Plaid Cymru	Lindsay Whittle	6,919	27.4	–6.8	5,893	23.2	–13.6
	Conservative	Laura Anne Jones	2,570	10.2	+2.4	2,895	11.4	+2.5
	Liberal Democrats	Rob W. Roffe	1,281	5.1	–7.3	1,907	7.5	–4.8
	Independent	Anne Blackman	1,204	4.8	New
	Independent	Avril A. Dafydd-Lewis	930	3.7	New
	UKIP	Brenda M. Vipass	590	2.3	New	863	3.4	New
	Green					613	2.4	Unknown
	Socialist Labour					549	2.2	Unknown
	BNP					326	1.3	New
	Cymru Annibynnol					280	1.1	New
	ProLife Alliance					96	0.4	New
Majority			4,974	19.7	+9.7
Turnout			25,387	36.8	–6.4
	Labour hold		Swing	+4.9

2003 Electorate: 68,152
Regional ballots rejected: 316

Elections in the 1990s

Welsh Assembly Election 1999: Caerphilly

Party		Candidate	Constituency			Regional
			Votes	%	±%	Votes	%	±%
	Labour	Ron Davies	12,602	44.2	N/A	10,721	37.6	N/A
	Plaid Cymru	Robert Gough	9,741	34.2	N/A	10,508	36.8	N/A
	Liberal Democrats	Mike German	3,543	12.4	N/A	3,496	12.3	N/A
	Conservative	Mary Taylor	2,213	7.8	N/A	2,542	8.9	N/A
	Socialist Alliance	Timothy Richards	412	1.5
	United Socialist					202	0.7	N/A
	Others					1,050	3.7	N/A
Majority			2,861	10.0
Turnout			28,511	43.2
	Labour win (new seat)

References

1. "Caerphilly Statement of Persons Nominated". Archived from the original on 18 April 2021. Retrieved 20 April 2021.
2. "The Senedd Election Results Caerphilly Constituency". Caerphilly. Retrieved 27 November 2021.
3. "Wales elections > Caerphilly". BBC News. 6 May 2016. Retrieved 8 March 2016.
4. "Results and turnout at the 2016 National Assembly for Wales election". Electoral Commission. Retrieved 24 November 2021.
5. "Wales elections > Caerphilly". BBC News. 6 May 2011. Retrieved 3 December 2021.
6. "Results and turnout at the 2011 National Assembly for Wales Election". Electoral Commission. Retrieved 25 October 2021.
7. "Results and turnout at the 2011 National Assembly for Wales election". Electoral Commission. Retrieved 27 November 2021.
8. "2007 Assembly Election Results (updated) July 2007(Page 78 of the PDF / Page 72 of booklet)" (PDF). National Assembly for Wales. Retrieved 24 October 2021.
9. The National Assembly for Wales elections 2003. The Electoral Commission. November 2003. pp. 110–115. Archived from the original on 3 June 2023. Retrieved 1 August 2021.

51°34′44″N3°13′05″W / 51.579°N 3.218°W / 51.579; -3.218