Political party strength in Pennsylvania

Partisan identification in the electorate

On July 10, 2023, the Pennsylvania Department of State reported that there were 3,890,435 (45.2%) registered Democrats, 3,432,657 (39.9%) registered Republicans, 929,364 (10.8%) registered unaffiliated and 346,280 (4.0%) registered with other parties. ^[1]

Partisan affiliation of elected officials

The following table indicates the party of elected officials in the U.S. state of Pennsylvania:

• Governor
• Lieutenant governor
• Attorney general
• State auditor general
• State treasurer

The table also indicates the historical party composition in the:

• State senate
• State house of representatives
• State delegation to the United States Senate
• State delegation to the United States House of Representatives

Following the 2020 Census, Pennsylvania lost one seat in the U.S. House of Representatives. As a result, starting with the general election of 2022, Pennsylvania sent 17 members to the house, and beginning with the general election of 2024 will have 19 electoral votes.

1777–1790

Year	Executive offices		State Legislature	United States Congress			Electoral votes
	President [a]	Vice President [a]	Executive Council	Senator (Class I)	Senator (Class III)	House
1777	Thomas Wharton Jr. (CS)	George Bryan (CS)	51CS, 15RS, 6?	began in 1789
1778	George Bryan (CS)		54CS, 7?, 5RS
1779	Joseph Reed (CS)	Matthew Smith	43CS, 26RS, 3?
1780		William Moore (I)	51CS, 14RS, 7?
1781			41CS, 31RS
1782	William Moore (I)	James Potter (CS)	38CS, 36RS
1783	John Dickinson (RS)	James Ewing (RS)	39RS, 34CS, 1?
1784			44RS, 29CS
1785		James Irvine (CS)	56CS, 18RS
1786	Benjamin Franklin (I)	Charles Biddle	38RS, 37CS
1787			41RS, 28CS
1788		Peter Muhlenberg	37RS, 32CS
1789	Thomas Mifflin (RS)	George Ross	47RS, 22CS	William Maclay (AA)	Robert Morris (PA)	6PA, 2AA	George Washington (I) / John Adams (F)Y
1790			42RS, 27CS

1791–1872

Year	Executive offices		State Legislature		United States Congress			Electoral votes
	Governor	Auditor General	Senate	House	Senator (Class I)	Senator (Class III)	House
1791	Thomas Mifflin (F)	not an elected office	10F, 8DR	36F, 33DR	vacant	Robert Morris (PA)	4PA, 4AA
1792				42F, 27DR				George Washington (I) / John Adams (F)Y
1793			9F, 9DR [b]				8AA, 5PA
1794			10F, 8DR	48F, 21DR	Albert Gallatin (AA)
					James Ross (PA)
1795			14F, 10DR	49F, 29DR	James Ross (F)	William Bingham (F)	8DR, 5F
1796			15F, 9DR	45F, 33DR			7DR, 6F	Thomas Jefferson (DR)N / John Adams (F)N
1797				44F, 34DR			8DR, 5F
1798				41F, 37DR
1799				47F, 31DR			9DR, 4F
1800	Thomas McKean (DR)		16F, 8DR	41DR, 37F				Thomas Jefferson (DR)Y / John Adams (F)N
1801			13F, 11DR	55DR, 23F		Peter Muhlenberg (DR)	10DR, 3F
						George Logan (DR)
1802			17DR, 8F	71DR, 15F
1803			21DR, 4F	77DR, 9F	Samuel Maclay (DR)		18DR
1804			24DR, 1F	81DR, 5F				Thomas Jefferson/ George Clinton (DR)Y
1805			25DR	78DR, 8F			17DR, 1F
1806	Thomas McKean (Quid)		15Const, 10DR [c]	53Const, 33DR [c]
1807			13Const, 12DR [c]	46DR, 40Const [c]		Andrew Gregg (DR)	15DR, 3F
1808			14DR, 7Quid, 4F	43DR, 23F, 20Quid [d]				James Madison/ George Clinton (DR)Y
1809	Simon Snyder (DR)		19DR, 7Quid, 5F	74DR, 21F	Michael Leib (DR)		16DR, 2F
1810			22DR, 6F, 3Quid	73DR, 15F, 7Quid
1811			21DR, 7F, 3Quid	72DR, 17F, 6Quid			17DR, 1F
1812			26DR, 5F	84DR, 11F				James Madison/ Elbridge Gerry (DR)Y
1813				77DR, 18F		Abner Lacock (DR)	22DR, 1F
1814			25DR, 6F	85DR, 10F	Jonathan Roberts (DR)		21DR, 2F
1815			21DR, 10F	71DR, 24F			19DR, 4F
1816			19DR, 12F	71DR, 26F				James Monroe/ Daniel D. Tompkins (DR)Y
1817				57DR, 30F, 10Quid
1818	William Findlay (DR)			55DR, 42F [e]
1819			20DR, 11F	64DR, 33F		Walter Lowrie (DR)
1820			23DR, 6F, 2Quid	67DR, 24F, 6Quid			18DR, 5F
1821	Joseph Hiester (DR)		20DR, 11F	52F, 45DR	vacant		15DR, 8F
1822			17DR, 14F	67DR, 30F	William Findlay (DR)		16DR, 7F
1823			23DR, 10F	71DR, 29F			20DR, 6F
1824	John Andrew Shulze (DR)		21DR, 11F, 1?	77DR, 23F				Andrew Jackson/ John C. Calhoun (DR)N
1825			26DR, 7F	79DR, 21F	William Findlay (J)	William Marks (NR)	14J, 11DR, 1F
1826			27DR, 6F	77DR, 23F			17J, 9DR
1827				74DR, 26F	Isaac D. Barnard (J)		22J, 3DR, 1NR
1828			26J, 7NR	76J, 22NR, 2 vac.				Andrew Jackson/ John C. Calhoun (D)Y
1829				89J, 11NR			24J, 1A-M, 1NR
1830	George Wolf (J)		26J, 6NR, 1A-M	87J, 13A-M
1831			25J, 5NR, 4A-M	72J, 28A-M		William Wilkins (J)	17J, 7A-M, 2NR
1832			23J, 6A-M, 4NR	74J, 22A-M, 4NR	George M. Dallas (J)			Andrew Jackson/ Martin Van Buren (D)Y
1833			22J, 9A-M, 2NR	61J, 33A-M, 5NR, 1?	Samuel McKean (J)		14J, 10A-M, 4NR
1834			24J, 7A-M, 2NR	64J, 25A-M, 11NR
1835			25J, 6A-M, 2W	62J, 27A-M, 11W		James Buchanan (J)	17J, 7A-M, 4NR
1836	Joseph Ritner (A-M)		23D, 9A-M, 1W	72A-M/W, 28D				Martin Van Buren/ Richard Mentor Johnson (D)Y
1837			15D, 12W, 6A-M [f]	72D, 21A-M, 7W	Samuel McKean (D)	James Buchanan (D)	16D, 7A-M, 3W, 2J
1838			19W, 14D	56D, 44W
1839	David R. Porter (D)		18W, 15D		vacant		17D, 6W, 5A-M
1840			17D, 16W	69D, 31W	Daniel Sturgeon (D)			William Henry Harrison/ John Tyler (W)Y
1841			20W, 13D	55W, 45D			15D, 13W
1842			17W, 16D	64D, 34W, 2WM
1843			19D, 14W	57D, 40W, 2WM, 1I			12D, 12W
1844			22D, 11W	58D, 42W			13W, 11D	James K. Polk/ George M. Dallas (D)Y
1845	Francis R. Shunk (D)		21D, 11W, 1KN	51D, 41W, 8KN		Simon Cameron (D)	12D, 10W, 2KN
1846			18W, 14D, 1KN	67D, 33W
1847				56W, 44D			16W, 7D, 1KN
1848			19W, 14D	64D, 36W			15W, 8D, 1KN	Zachary Taylor/ Millard Fillmore (W)Y
	William F. Johnston (W)
1849			21W, 12D	50D, 45W, 5KN [g]		James Cooper (W)	11W, 11D, 1KN, 1FS
1850			17D, 16W	59D, 41W
1851		Ephraim Banks (D)	16W, 16D, 1I [h]	60D, 36W, 2ID, 1IW, 1 vac.	Richard Brodhead (D)		15D, 9W
1852	William Bigler (D)		17W, 16D	58D, 37W, 5KN				Franklin Pierce/ William R. King (D)Y
1853			17W, 15D, 1KN	62D, 38W			16D, 9W
1854			18D, 14W, 1KN	70D, 26W, 4KN
1855	James Pollock (W)		17D, 15W, 1KN	46W, 32D, 22KN [i]		vacant	13O, 7D, 3W, 1R, 1KN
1856			17D, 16Fus	66D, 34Fus		William Bigler (D)		James Buchanan/ John C. Breckinridge (D)Y
1857		Jacob Fry Jr. (D)	18Fus, 15D	53D, 47Fus	Simon Cameron (R)		15D, 10R
1858	William F. Packer (D)		21D, 12R	68D, 30R, 2I			14D, 11R
1859			17D, 16R	67R, 33D			20R, 5D
1860		Thomas E. Cochran (R)	21R, 12D	66R, 34D				Abraham Lincoln/ Hannibal Hamlin (R)Y
1861	Andrew Gregg Curtin (R)		27R, 6D	71R, 29D	David Wilmot (R)	Edgar Cowan (R)	19R, 6D
1862			23R, 10D	51D, 49R			17R, 8D
1863		Isaac Slenker (D)	21R, 12D	55D, 45R	Charles R. Buckalew (D)		12R, 12D
1864			17R, 16D	52R, 48D				Abraham Lincoln/ Andrew Johnson (NU)Y
1865			20R, 13D	64R, 36D			15R, 9D
1866		John F. Hartranft (R)	21R, 12D	67R, 33D			16R, 8D
1867	John W. Geary (R)			62R, 38D		Simon Cameron (R)	18R, 6D
1868			19R, 14D	54R, 46D				Ulysses S. Grant/ Schuyler Colfax (R)Y
1869			18R, 15D	62R, 38D	John Scott (R)		16R, 8D
1870				60R, 40D			18R, 6D
1871			17D, 16R	55R, 45D			13R, 11D
1872			17R, 16D	63R, 39D, 1I				Ulysses S. Grant/ Henry Wilson (R)Y
		C. D. Brigham

1873–1978

Year	Executive offices				State Legislature		United States Congress			Electoral votes
	Governor	Lieutenant Governor	Auditor General	Treasurer	Senate	House	Senator (Class I)	Senator (Class III)	House
1873	John F. Hartranft (R)	no such office	Harrison Allen (R)	Robert W. Mackey (R)	18R, 14D, 1LR	60R, 39D, 1I	John Scott (R)	Simon Cameron (R)	22R, 5D
1874					20R, 12D, 1LR	57R, 43D
1875		John Latta (D)	Justus F. Temple (D)		30R, 20D [j]	110D, 89R, 1I, 1Proh [k]	William A. Wallace (D)		17D, 10R
1876				Henry Rawle (R)	29R, 21D				18D, 9R	Rutherford B. Hayes/ William A. Wheeler (R)Y
1877					31R, 19D	119R, 81D, 1ID		J. Donald Cameron (R)	17R, 10D
1878			William P. Schell (D)	Amos C. Noyes (D)
1879	Henry M. Hoyt (R)	Charles W. Stone (R)			32R, 17D, 1GB	107R, 77D, 17GB			17R, 8D, 2GB
1880				Samuel Butler (R)						James A. Garfield/ Chester A. Arthur (R)Y
1881			John A. Lemon (R)			121R, 78D, 1GB, 1Fus-D	John I. Mitchell (R)		18R, 7D, 2GB
1882				Silas M. Bailey (R)
1883	Robert E. Pattison (D)	Chauncey Forward Black (D)			30R, 20D	113D, 88R			15R, 12D, 1GB
1884			Jerome B. Niles (R)	William Livsey (R)						James G. Blaine/ John A. Logan (R)N
1885					31R, 19D	140R, 60D, 1GBR			20R, 8D
1886				Matthew Quay (R)
1887	James A. Beaver (R)	William T. Davies (R)	A. Wilson Norris [l]	William Livsey (R)	34R, 16D	131R, 69D, 1GBL	Matthew Quay (R)
1888				William B. Hart (R)						Benjamin Harrison/ Levi P. Morton (R)Y
			Thomas McCamant (R)
1889				William Livsey (R)		144R, 60D			21 R, 7D
1890				Henry K. Boyer (R)
1891	Robert E. Pattison (D)	Louis Arthur Watres (R)			31R, 19D	122R, 79D, 3Fus			18R, 10D
1892			David McMurtrie Gregg (R)	John Wallace Morrison (R)					17R, 11D	Benjamin Harrison/ Whitelaw Reid (R)N
1893					33R, 17D	135R, 69D			20R, 10D
1894				Samuel Jackson (R)
1895	Daniel H. Hastings (R)	Walter Lyon (R)	Amos H. Mylin		44R, 6D	175R, 29D			28R, 2D
1896				Benjamin J. Haywood (R)						William McKinley/ Garret Hobart (R)Y
1897						172R, 32D		Boies Penrose (R) [l]	27R, 3D
1898			Levi G. McCauley (R)	James S. Beacom (R)
1899	William A. Stone (R)	John P. S. Gobin (R)			37R, 13D	127R, 71D, 6Fus	vacant		20R, 10D
1900				James E. Barnett (R)						William McKinley/ Theodore Roosevelt (R)Y
1901			Edmund B. Hardenbergh (R)		38R, 12D	156R, 48D	Matthew Quay (R)		26R, 4D
1902				Frank G. Harris (R)
1903	Samuel W. Pennypacker (R)	William M. Brown (R)			40R, 10D	160R, 44D			28R, 4D
1904			William Preston Snyder (R)	William L. Mathues (R)					29R, 3D	Theodore Roosevelt/ Charles W. Fairbanks (R)Y
							Philander C. Knox (R)
1905						187R, 17D			31R, 1D
1906				William H. Berry (D)
1907	Edwin Sydney Stuart (R)	Robert S. Murphy (R)	Robert K. Young (R)			157R, 50D			25R, 7D
1908				John O. Sheatz (R)						William Howard Taft/ James S. Sherman (R)Y
1909					39R, 11D	173R, 34D	George T. Oliver (R)		27R, 5D
1910			A. E. Sisson (R)
1911	John K. Tener (R)	John Merriman Reynolds (R)		Charles Frederick Wright (R)	38R, 18D	162R, 44D, 1Soc			23R, 9D
1912									24R, 8D	Theodore Roosevelt/ Hiram Johnson (Prog)N
1913			Archibald W. Powell (R)	Robert K. Young (R)	34R, 13D, 3Prog	127R, 57D, 14Prog, 9Wash			22R, 12D, 2Prog
1914
1915	Martin Grove Brumbaugh (R)	Frank B. McClain (R)			38R, 11D, 1Prog	164R, 41D, 1Soc, 1Prog			30R, 6D
1916										Charles Evans Hughes/ Charles W. Fairbanks (R)N
1917			Charles A. Snyder (R)	Harmon M. Kephart (R)	39R, 10D, 1Prog	169R, 37D, 1Soc, 1Prog	Philander C. Knox (R)		29R, 6D, 1Prog
1918									28R, 7D, 1Prog
1919	William Cameron Sproul (R)	Edward E. Beidleman (R)			44R, 6D	184R, 23D			29R, 7D
1920									30R, 6D	Warren G. Harding/ Calvin Coolidge (R)Y
1921			Samuel S. Lewis (R)	Charles A. Snyder (R)	47R, 3D	193R, 14D			35R, 1D
							William E. Crow (R)
1922								George W. Pepper (R)
							David A. Reed (R)
1923	Gifford Pinchot (R)	David J. Davis (R)			43R, 7D	167R, 41D			30R, 6D
1924										Calvin Coolidge/ Charles G. Dawes (R)Y
1925			Edward Martin (R)	Samuel S. Lewis (R)	42R, 8D	194R, 14D			36R
1926
1927	John Stuchell Fisher (R)	Arthur James (R)			45R, 5D	191R, 17D		William Scott Vare (R)	34R, 2D
1928										Herbert Hoover/ Charles Curtis (R)Y
1929			Charles A. Waters (R)	Edward Martin (R)	44R, 6D	192R, 16D			35R, 1D
1930								Joseph R. Grundy (R)	36R
1931	Gifford Pinchot (R)	Edward C. Shannon (R)			46R, 4D	184R, 22D, 2Soc		James J. Davis (R)	33R, 3D
1932										Herbert Hoover/ Charles Curtis (R)N
1933			Frank E. Baldwin (R)	Charles A. Waters (R)	43R, 7D	140R, 65D, 2I, 1Soc			23R, 11D
1934									22R, 12D
1935	George Howard Earle III (D)	Thomas Kennedy (D)			31R, 19D	117D, 89R, 2Soc	Joseph F. Guffey (D)		23D, 11R
1936										Franklin D. Roosevelt/ John Nance Garner (D)Y
1937			Warren R. Roberts (D)	F. Clair Ross (D)	34D, 16R	154D, 54R			27D, 7R
1938
1939	Arthur James (R)	Samuel S. Lewis (R)			27R, 23D	129R, 79D			19R, 15D
1940										Franklin D. Roosevelt/ Henry A. Wallace (D)Y
1941			F. Clair Ross (D)	G. Harold Wagner (D)	32R, 18D	126D, 82R			19D, 15R
1942
1943	Edward Martin (R)	John C. Bell Jr. (R)				132R, 76D			20R, 13D
1944									21R, 12D	Franklin D. Roosevelt/ Harry S. Truman Y
1945			Ted A. Rosenberg	Ramsey S. Black (D)		109R, 99D		Francis J. Myers (D)	18R, 15D
			G. Harold Wagner (D)
1946									19R, 14D
1947	John C. Bell Jr. (R)	vacant			34R, 16D	170R, 38D	Edward Martin (R)		28R, 5D
	James H. Duff (R)	Daniel Strickler (R)
1948										Thomas E. Dewey/ Earl Warren (R)N
1949			Weldon Brinton Heyburn (R)	Charles R. Barber (R)	35R, 15D	117R, 91D			17R, 16D
1950
1951	John S. Fine (R)	Lloyd H. Wood (R)			30R, 20D	120R, 88D		James H. Duff (R)	20R, 13D
1952										Dwight D. Eisenhower/ Richard Nixon (R)Y
1953			Charles R. Barber (R)	Weldon Brinton Heyburn (R)	32R, 18D	110R, 98D			19R, 11D
1954
1955	George M. Leader (D)	Roy E. Furman (D)			26R, 24D	112D, 98R			16R, 14D
1956
1957			Charles C. Smith (R)	Robert F. Kent (R)	27R, 23D	126R, 84D		Joseph S. Clark Jr. (D)	17R, 13D
1958
1959	David L. Lawrence (D)	John Morgan Davis (D)			28R, 22D	108D, 102R	Hugh Scott (R)		16D, 14R
1960										John F. Kennedy/ Lyndon B. Johnson (D)Y
1961			Thomas Z. Minehart (D)	Grace M. Sloan (D)	25D, 25R [m]	109D, 101R			16R, 14D
1962
1963	William Scranton (R)	Raymond P. Shafer (R)			27R, 23D	108R, 102D			14R, 13D
1964										Lyndon B. Johnson/ Hubert Humphrey (D)Y
1965			Grace M. Sloan (D)	Thomas Z. Minehart (D)	28R, 22D	116D, 93R			15D, 12R
1966
1967	Raymond P. Shafer (R)	Raymond J. Broderick (R)			27R, 23D	104R, 99D			14D, 13R
1968										Hubert Humphrey/ Edmund Muskie (D)N
1969			Bob Casey Sr. (D)	Grace M. Sloan (D)		107D, 96R		Richard Schweiker (R)
1970
1971	Milton Shapp (D)	Ernest Kline (D)			26D, 24R	113D, 90R
1972										Richard Nixon/ Spiro Agnew (R)Y
1973						107R, 96D			13D, 12R
1974
1975					30D, 20R	113D, 90R			14D, 11R
1976										Jimmy Carter/ Walter Mondale (D)Y
1977			Al Benedict (D)	Robert E. Casey (D)	31D, 19R	118D, 85R	John Heinz (R)		17D, 8R
1978

1978–present

Year	Executive offices					State Legislature		United States Congress			Electoral votes
	Governor	Lieutenant Governor	Attorney General	Auditor General	Treasurer	Senate	House	Senator (Class I)	Senator (Class III)	House
1979	Dick Thornburgh (R)	William Scranton III (R)	not an elected office	Al Benedict (D)	Robert E. Casey (D)	28D, 22R	102R, 101D	John Heinz (R) [l]	Richard Schweiker (R)	15D, 10R
1980											Ronald Reagan/ George H. W. Bush (R)Y
1981			LeRoy Zimmerman (R)		R. Budd Dwyer (R) [l]	26R, 24D	103R, 100D		Arlen Specter (R)	13D, 12R
1982
1983						27R, 23D	103D, 100R			13D, 10R
1984
1985				Donald A. Bailey (D)
1986
1987	Bob Casey Sr. (D)	Mark Singel (D)			G. Davis Greene Jr. (D) [n]	26R, 24D	102D, 101R			12D, 11R
1988											George H. W. Bush/ Dan Quayle (R)Y
1989			Ernie Preate (R) [o]	Barbara Hafer (R)	Catherine Baker Knoll (D)	27R, 23D	104D, 99R
1990
1991						26R, 24D	107D, 96R			12R, 11D
								Harris Wofford (D) [p]
1992											Bill Clinton/ Al Gore (D)Y
1993						25D, 25R [q]	105D, 98R			11D, 10R
1994						26R, 24D [r]
1995	Tom Ridge (R)	Mark Schweiker (R)				29R, 21D	102R, 101D	Rick Santorum (R)
			Tom Corbett (R) [n]
1996
1997			D. Michael Fisher (R) [o]	Bob Casey Jr. (D)	Barbara Hafer (R)	30R, 20D	104R, 99D
1998
1999							103R, 100D
2000											Al Gore/ Joe Lieberman (D)N
2001							104R, 99D			11R, 10D
	Mark Schweiker (R) [s]	Robert Jubelirer (R) [t]
2002
2003	Ed Rendell (D)	Catherine Baker Knoll (D) [l]			Barbara Hafer (D)	29R, 21D	110R, 93D			12R, 7D
2004											John Kerry/ John Edwards (D)N
			Jerry Pappert (R) [n]
2005			Tom Corbett (R)	Jack Wagner (D)	Bob Casey Jr. (D) [u]	30R, 20D	110R, 93D
2006
2007					Robin Wiessmann (D) [n]	29R, 21D	102D, 101R [v]	Bob Casey Jr. (D)		11D, 8R
2008											Barack Obama/ Joe Biden (D)Y
		Joe Scarnati (R) [t]
2009					Rob McCord (D) [o] [7]	30R, 20D	104D, 99R			12D, 7R
									Arlen Specter (D) [8]
2010
2011	Tom Corbett (R)	Jim Cawley (R)	Linda L. Kelly (R) [n] [w]				112R, 91D		Pat Toomey (R)	12R, 7D
2012
2013			Kathleen Kane (D) [o] [9]	Eugene DePasquale (D)		27R, 23D	111R, 92D			13R, 5D
2014
2015	Tom Wolf (D)	Mike Stack (D)			Tim Reese (I) [n]	30R, 20D	120R, 83D
2016						31R, 19D	119R, 84D				Donald Trump/ Mike Pence (R)Y
			Bruce Beemer (D) [n] [x]
2017			Josh Shapiro (D)		Joe Torsella (D)	34R, 16D	121R, 82D
2018										10R, 8D [y]
2019		John Fetterman (D)				28R, 22D [z]	110R, 93D			9R, 9D
2020						28R, 21D, 1I [aa]					Joe Biden/ Kamala Harris (D)Y
2021				Timothy DeFoor (R)	Stacy Garrity (R)	28R, 21D, 1I	113R, 90D
2022
2023	Josh Shapiro (D)	Austin Davis (D)	Michelle Henry (D) [n]			28R, 22D	102D, 101R		John Fetterman (D)	9D, 8R
2024											Donald Trump/ JD Vance (R)Y
2025			Dave Sunday (R)			27R, 23D [ab]		Dave McCormick (R)		10R, 7D

Key to party colors and abbreviations for members of the U.S. Congress and other politicians or officials

Alaskan Independence (AKIP) Know Nothing (KN) American Labor (AL) Anti-Jacksonian (Anti-J) National Republican (NR) Anti-Administration (AA) Anti-Masonic (Anti-M) Conservative (Con) Covenant (Cov)

Democratic (D) Democratic–Farmer–Labor (DFL) Democratic–NPL (D-NPL) Dixiecrat (Dix), States' Rights (SR) Democratic-Republican (DR) Farmer–Labor (FL) Federalist (F) Pro-Administration (PA)

Free Soil (FS) Fusion (Fus) Greenback (GB) Independence (IPM) Independent Democrat (ID) Independent Republican (IR) Jacksonian (J) Liberal (Lib)

Libertarian (L) National Union (NU) Nonpartisan League (NPL) Nullifier (N) Opposition Northern (O) Opposition Southern (O) Populist (Pop) Progressive (Prog)

Prohibition (Proh) Readjuster (Rea) Republican (R) Silver (Sv) Silver Republican (SvR) Socialist (Soc) Union (U) Unconditional Union (UU)

Vermont Progressive (VP) Whig (W) Independent (I) Nonpartisan (NP)

1. From 1777 to 1790, Pennsylvania had a series of presidents and vice presidents of The Supreme Council.
2. A Federalist, Anthony Morris, was elected as Speaker of the chamber. ^[2]
3. The Federalists and Quids, who were moderates within the Democratic-Republican Party, formed a coalition in the 1805 election and called themselves the Constitutionalists; when they achieved a majority, they organized the chamber together, and this coalition continued in succeeding elections. ^[3]
4. Elected Nathaniel Boileau, a Democratic-Republican, as Speaker.
5. Some sources begin to cite the Federalists at the state level as Independent Republicans starting with this year.
6. The Whigs and Anti-Masons formed a coalition to govern the chamber.
7. A Democrat, William F. Packer, was elected as Speaker, and Democrats organized the chamber.
8. A Whig, Benjamin Matthias, was elected as Speaker of the Senate on the 7th Ballot. ^[4]
9. A Whig, Henry K. Strong, was elected in a coalition between the Whigs and Know-Nothings.
10. Effective with the Constitution of 1874, Senators began to serve four-year terms, after a transition period starting with the election of 1874 and continuing through the election of 1876.
11. Effective with the Constitution of 1874, House members began to serve two-year terms starting with the election of 1874.
12. Died in office.
13. Due to the Democratic Lt. Governor casting the deciding vote, the Democrats took control of the chamber.
14. Appointed to fill a vacancy.
15. Resigned.
16. Appointed by Governor Casey in May 1991 after Heinz's death and won a special election in November 1991 for the remainder of the term.
17. Sen. Frank Pecora switched parties from Republican to Democratic, but in the case of ties, the Lt. Governor casts the deciding vote, and as a Democrat, he gave his party control. ^[5]
18. After months of turmoil, a special election result was thrown out that had been won by Democrat William G. Stinson, who had succeeded fellow Democrat Francis Lynch. A federal judge awarded the election to Republican Bruce Marks. Additionally, Democrat Eugene Scanlon's death in March 1994 gave Republicans control. ^[6]
19. As lieutenant governor, filled vacancy in office of governor.
20. As president pro tempore of the state Senate, filled vacancy in office of lieutenant governor.
21. Resigned following election to U.S. Senate.
22. Elected a Republican Speaker.
23. William H. Ryan Jr. served as acting Attorney General from January (when Corbett was inaugurated as governor) until Kelly's nomination was confirmed by the State Senate.
24. Republican Deputy Attorney General Bruce Castor served for 13 days from August 17–30 between Kane's resignation and Beemer's assumption of the office.
25. Democrat Conor Lamb won a special election to fill a vacancy for Pennsylvania's 18th Congressional District, left by Republican Timothy F. Murphy's resignation. Democrats Mary Gay Scanlon and Susan Wild won special elections to fill seats left vacant by Republicans Pat Meehan/
    Charlie Dent respectively.
26. Republican Don C. White resigned in February 2019 and Republican Joe Pittman was elected in May 2019 to succeed him.^{[ citation needed ]} Also, Republican Mike Folmer resigned in September 2019 and Republican Dave Arnold was elected to succeed him in a January 2020 special election. ^{[10] [11]}
27. John Yudichak (District 14) switched parties from Democratic to Independent in November 2019 and began caucusing with the Republican majority. ^[12]
28. Ryan Aument (District 36) resigned December 31, 2024 to become State Director to U.S. Senator Dave McCormick. James Andrew Malone was elected in a special election on March 25, 2025, flipping the seat to Democrats.

See also

• Democratic Party of Pennsylvania
• Elections in Pennsylvania
• Green Party of Pennsylvania
• Libertarian Party of Pennsylvania
• Politics of Pennsylvania
• Republican Party of Pennsylvania

References

1. "Voting and Election Statistics, Current Registration Statistics". Pennsylvania Department of State. Retrieved July 12, 2023.
2. "Anthony Morris". The official website for the Pennsylvania General Assembly. Retrieved 2021-06-24.
3. "John Randolph and the Old Republicans". Boundless. July 21, 2015. Archived from the original on September 19, 2015.
4. Journal of the Senate of the Commonwealth of Pennsylvania. 1851. pp. 8–9.
5. "Frank A Pecora". Pennsylvania General Assembly. Retrieved January 3, 2017.
6. Eshleman Jr., Russell E. (March 11, 1994). "Pa. Sen. Scanlon Dies, Leaving Senate in Grief, GOP in Lead Regardless of the Stinson Outcome, the Republicans Are Now the Majority and Can Control the Action". Philadelphia Inquirer. p. B06. Archived from the original on January 3, 2016.
7. Levy, Marc (January 31, 2015). "Pennsylvania treasurer Rob McCord says he will plead guilty to federal charges". Lancaster Online. Associated Press. Retrieved May 20, 2015.
8. Switched parties from Republican to Democratic on April 28, 2009.
9. Cullinane, Susannah; Ellis, Ralph (2016-08-16). "Pennsylvania Attorney General Kathleen Kane resigning". CNN Politics. Retrieved 2021-06-24.
10. "PoliticsPA" . Retrieved 2021-06-24.
11. "Dave Arnold wins 48th Senatorial District special election". Local 21 News. 2020-01-14. Retrieved 2021-06-24.
12. "Pa. Dems lose a state senator: John Yudichak of Luzerne County declares himself independent, will caucus with GOP". pennlive. 2019-11-19. Retrieved 2021-06-24.