Political party strength in New Jersey

Voter registration by county

Voter registration by congressional district

Legend:

•   30–40%
•   40–50%
•   50–60%
•   30–40%
•   30–40%
•   40–50%

Partisan identification in the electorate

On November 1, 2025, the New Jersey Department of State reported 6,632,260 registered voters. Among these, 2,526,861 (38.1%) were registered Democrats, 1,673,397 (25.3%) were registered Republicans, 2,358,288 (35.6%) were registered unaffiliated, and 73,714 (1.1%) were 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 New Jersey:

• Governor
• Lieutenant Governor

The table also indicates the historical party composition in the:

• State Senate
• State General Assembly
• State delegation to the U.S. Senate
• State delegation to the U.S. House of Representatives

For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.

1776–2009

Year	Executive office	State Legislature		United States Congress			Electoral votes
	Governor	Senate	Assembly	Senator (Class I)	Senator (Class II)	House
1776	William Livingston (F)			began in 1789
...
1788
1789		F majority	F majority	Jonathan Elmer (PA)	William Paterson (PA)	4PA	George Washington (I)Y
1790	Elisha Lawrence (F) [a]	F majority	F majority
	William Paterson (F)
1791		F majority	F majority	John Rutherfurd (PA)	Philemon Dickinson (PA)	3PA, 1I
1792		F majority	DR majority
1793	Thomas Henderson (F) [a]	F majority	DR majority		Frederick Frelinghuysen (PA)	5PA
	Richard Howell (F)
1794		F majority	DR majority			4PA, 1I [b]
1795		F majority	DR majority	John Rutherfurd (F)	Frederick Frelinghuysen (F)	4F, 1I
1796		F majority	DR majority				John Adams/ Thomas Pinckney (F)Y
1797		DR majority	F majority	Franklin Davenport (F)	Richard Stockton (F)	5F
1798		DR majority	DR majority
1799		F majority	F majority	James Schureman (F)	Jonathan Dayton (F)	3DR, 2F
1800		F majority	F majority				John Adams/ Charles Cotesworth Pinckney (F)N
1801	Joseph Bloomfield (DR)	9F, 4DR	28F, 11DR	Aaron Ogden (F)		5DR
1802	John Lambert (DR) [a]	7F, 6DR	24DR, 16F
1803	Joseph Bloomfield (DR)	8DR, 5F	20F, 19DR, 1? [c]	John Condit (DR)		6DR
1804		8DR, 5F	25DR, 14F, 1?				Thomas Jefferson/ George Clinton (DR)Y
1805		9DR, 4F	28DR, 12F		Aaron Kitchell (DR)
1806		8DR, 5F	25DR, 14F, 1OR
1807		7F, 6DR	21DR, 19F
1808		9DR, 4F	25DR, 15F				James Madison/ George Clinton (DR)Y
1809		7DR, 6F	23DR, 17F	John Lambert (DR)	John Condit (DR)
1810		8DR, 5F	24DR, 16F
1811			26DR, 14F
1812	Aaron Ogden (F)	9DR, 4F	30DR, 10F				DeWitt Clinton/ Jared Ingersoll (F)N
1813	William Sanford Pennington (DR)	7F, 6DR	23F, 17DR			4F, 2DR
1814		7DR, 6F	23DR, 17F			3DR, 3F [d]
1815	Mahlon Dickerson (DR)		22DR, 18F	James J. Wilson (DR)		6DR
1816			27DR, 15F				James Monroe/ Daniel D. Tompkins (DR)Y
1817	Isaac Halstead Williamson (D)	8DR, 5F	23DR, 18F		Mahlon Dickerson (DR)
1818			26DR, 16F
1819			27DR, 16F	Samuel L. Southard (DR)
1820		9DR, 4F	31DR, 12F
1821			36DR, 7F
1822			30DR, 13F
1823			31DR, 12F	Joseph McIlvaine (DR)
1824		8DR, 5F	29DR, 14F				Andrew Jackson/ John C. Calhoun (DR)N
1825		J majority	J majority	Joseph McIlvaine (NR)	Mahlon Dickerson (J)	3J, 2NR, 1I
1826		J majority	J majority
1827		NR majority	NR majority	Ephraim Bateman (NR)		3NR, 2I, 1J
1828		NR majority	NR majority				John Quincy Adams/ Richard Rush (NR)N
1829	Peter Dumont Vroom (D)	9NR, 5J	25NR, 18J	Mahlon Dickerson (J)	Theodore Frelinghuysen (NR)	6NR
1830		8J, 6NR	28J, 15NR
1831		10J, 4NR	37J, 13NR
1832	Samuel L. Southard (W)	7NR, 7J [e]	26J, 24NR				Andrew Jackson/ Martin Van Buren (D)Y
1833	Elias P. Seeley (W)	8NR, 6J	33NR, 17J	Samuel L. Southard (NR)		6J
	Peter Dumont Vroom (D)
1834		13D, 1NR	41D, 9NR
1835		8D, 6W	28D, 21W, 1?		Garret D. Wall (J)	5J, 1W
1836	Philemon Dickerson (D)	9D, 5W	34D, 16W				William Henry Harrison/ Francis Granger (W)N
1837	William Pennington (W)	7D, 7W [f]	31D, 19W	Samuel L. Southard (W)	Garret D. Wall (D)	6W
1838		10W, 6D	35W, 18D
1839		10W, 7D	33W, 20D			5D, 1W
1840							William Henry Harrison/ John Tyler (W)Y
1841		13W, 5D	41W, 12D	William L. Dayton (W)	Jacob W. Miller (W)	6W
1842		9D, 9W [g]	34W, 24D
1843	Daniel Haines (D)	10W, 8D	32W, 26D			4D, 1W
1844		12D, 6W	35D, 23W				Henry Clay/ Theodore Frelinghuysen (W)N
1845	Charles C. Stratton (W)	13W, 6D	40W, 18D			4W, 1D
1846		12W, 7D	30W, 27D, 1A			3W, 2D
1847			40W, 18D			4W, 1D
1848	Daniel Haines (D)		38W, 20D				Zachary Taylor/ Millard Fillmore (W)Y
1849			39W, 19D
1850		10W, 9D	33W, 25D
1851	George F. Fort (D)	10D, 10W [h]	30D, 28W	Robert F. Stockton (D)		4D, 1W
1852		13D, 7W	45D, 15W				Franklin Pierce/ William R. King (D)Y
1853			39D, 21W	John Renshaw Thomson (D)	William Wright (D)
1854	Rodman M. Price (D)		40D, 20W
1855		10D, 9W, 1KN [i]	29D, 25W, 6KN [j]			4O, 1D
1856		11D, 5W, 4KN	31D, 15KN, 14W				James Buchanan/ John C. Breckinridge (D)Y
1857	William A. Newell (R)	11D, 6O, 3KN	38D, 22R			3D, 2R
1858		15D, 6O	35D, 25R
1859		13D, 8O	36O, 24D		John C. Ten Eyck (R)	3R, 2D
1860	Charles Smith Olden (R)	12D, 8R, 1KN	30D, 28R, 2KN [k]				4 – Abraham Lincoln/ Hannibal Hamlin (R)Y 3 – Stephen A. Douglas/ Herschel V. Johnson (D)N
1861		11R, 10D	32D, 28R	Richard Stockton Field (R)		3D, 2R
1862		10D, 10R, 1I [l]	36D, 24R	James Walter Wall (D)
1863	Joel Parker (D)	13D, 8R	45D, 15R	William Wright (D)		4D, 1R
1864		14D, 7R	40D, 20R				George B. McClellan/ George H. Pendleton (D)N
1865		13D, 8R	30D, 30R [m]		John P. Stockton (D)	3D, 2R
1866	Marcus Lawrence Ward (R)	11R, 10D	36R, 24D
1867		13R, 8D	33R, 27D	Frederick T. Frelinghuysen (R)	Alexander G. Cattell (R)	3R, 2D
1868		11D, 10R	46D, 14R				Horatio Seymour/ Francis Preston Blair Jr. (D)N
1869	Theodore F. Randolph (D)	12D, 9R	32D, 28R	John P. Stockton (D)		3D, 2R
1870		13D, 8R	34D, 26R
1871		12R, 9D	34R, 26D		Frederick T. Frelinghuysen (R)	3R, 2D
1872	Joel Parker (D)		36R, 24D				Ulysses S. Grant/ Henry Wilson (R)Y
1873		14R, 7D	44R, 16D			6R, 1D
1874			32R, 28D
1875	Joseph D. Bedle (D)	13R, 8D	41D, 19R	Theodore F. Randolph (D)		5D, 2R
1876		12R, 9D	37R, 23D				Samuel J. Tilden/ Thomas A. Hendricks (D)N
1877		11D, 10R	30D, 30R [n]		John R. McPherson (D)	4D, 3R
1878	George B. McClellan (D)	12D, 9R	33D, 27R
1879		11R, 9D, 1I	33R, 27D			4R, 3D
1880		12R, 9D	35R, 25D				Winfield Scott Hancock/ William Hayden English (D)N
1881	George C. Ludlow (D)	15R, 5D, 1I	34R, 26D	William J. Sewell (R)		4R, 3D
1882		12R, 9D	35D, 25R
1883
1884	Leon Abbett (D)		34D, 26R				Grover Cleveland/ Thomas A. Hendricks (D)Y
1885		11R, 10D	34R, 26D
1886		13R, 8D	31R, 29D
1887	Robert S. Green (D)	12R, 9D	32R, 28D	Rufus Blodgett (D)		5R, 2D
1888			37R, 23D				Grover Cleveland/ Allen G. Thurman (D)N
1889		11D, 10R	32D, 28R			4R, 3D
1890	Leon Abbett (D)	11R, 10D	37D, 23R
1891		14D, 7R	40D, 20R			5D, 2R
1892		16D, 5R	42D, 18R				Grover Cleveland/ Adlai Stevenson I (D)Y
1893	George Theodore Werts (D)		39D, 21R	James Smith Jr. (D)		6D, 2R
1894		11R, 10D	39R, 21D
1895		16R, 5D	54R, 6D		William J. Sewell (R)	8R
1896	John W. Griggs (R) [o]	18R, 3D	53R, 7D				William McKinley/ Garret Hobart (R)Y
1897			56R, 4D
1898	Foster McGowan Voorhees (R) [a]	14R, 7D	37R, 23D
	David Ogden Watkins (R) [a]
1899	Foster McGowan Voorhees (R)			John Kean (R)		6R, 2D
1900			43R, 17D				William McKinley/ Theodore Roosevelt (R)Y
1901		17R, 4D	38R, 22D		John F. Dryden (R)
1902	Franklin Murphy (R)		46R, 14D
1903		14R, 7D	38R, 22D			7R, 3D
1904							Theodore Roosevelt/ Charles W. Fairbanks (R)Y
1905	Edward C. Stokes (R)		46R, 14D			9R, 1D
1906		17R, 4D	57R, 3D
1907		15R, 6D	31D, 29R		Frank O. Briggs (R)	6R, 4D
1908	John Franklin Fort (R)	14R, 7D	40R, 20D				William Howard Taft/ James S. Sherman (R)Y
1909		13R, 8D	45R, 15D			7R, 3D
1910		15R, 6D	41R, 19D
1911	Woodrow Wilson (D) [p]	12R, 9D	42D, 18R	James E. Martine (D)		7D, 3R
1912		11R, 10D	37R, 23D				Woodrow Wilson/ Thomas R. Marshall (D)Y
1913	James Fairman Fielder (D) [a]	12D, 9R	52D, 8R		William Hughes (D)	11D, 1R
	Leon Rutherford Taylor (D) [a]
1914	James Fairman Fielder (D)	11D, 10R	37D, 23R
1915		11R, 10D	38R, 22D			8R, 4D
1916		13R, 8D	40R, 20D				Charles Evans Hughes/ Charles W. Fairbanks (R)N
1917	Walter E. Edge [q]	15R, 6D	44R, 16D	Joseph S. Frelinghuysen Sr. (R)	David Baird Sr. (R)	9R, 3D
1918			46R, 17D
1919	William Nelson Runyon (R) [a]		30R, 30D [r]		Walter E. Edge (R)	8R, 4D
1920	Clarence E. Case (R) [a]		33R, 27D				Warren G. Harding/ Calvin Coolidge (R)Y
	Edward I. Edwards (D)
1921			59R, 1D			11R, 1D
1922		16R, 5D	45R, 15D
1923	George Sebastian Silzer (D)	17R, 4D	44R, 16D	Edward I. Edwards (D)		6R, 6D
1924			42R, 18D				Calvin Coolidge/ Charles G. Dawes (R)Y
1925		18R, 3D	47R, 13D			10R, 2D
1926	A. Harry Moore (D)		46R, 14D
1927		17R, 4D	47R, 13D			9R, 3D
1928		18R, 3D	46R, 14D				Herbert Hoover/ Charles Curtis (R)Y
1929	Morgan Foster Larson (R)		48R, 12D	Hamilton F. Kean (R)	David Baird Jr. (R)	10R, 2D
1930		17R, 4D	46R, 14D
1931					Dwight Morrow (R)	8R, 4D
1932	A. Harry Moore (D) [q]	15R, 6D	34D, 26R				Franklin D. Roosevelt/ John Nance Garner (D)Y
1933			38R, 22D		W. Warren Barbour (R)	10R, 4D
1934			33R, 27D
1935	Clifford Ross Powell (R) [a]		34R, 26D	A. Harry Moore (D)
	Horace Griggs Prall (R) [a]
	Harold G. Hoffman (R)
1936		13R, 8D	42R, 18D
1937		11R, 10D	39D, 21R	John Milton (D)	William H. Smathers (D)	7R, 7D
1938	A. Harry Moore (D)	13R, 8D	41R, 19D
1939		15R, 6D	45R, 15D	W. Warren Barbour (R)		11R, 3D
1940							Franklin D. Roosevelt/ Henry A. Wallace (D)Y
1941	Charles Edison (D)	17R, 4D	44R, 16D			10R, 4D
1942
1943		18R, 3D		Arthur Walsh (D)	Albert W. Hawkes (R)	11R, 3D
1944	Walter E. Edge (R)						Franklin D. Roosevelt/ Harry S. Truman (D)Y
1945		17R, 4D	42R, 18D	H. Alexander Smith (R)		12R, 2D
1946			41R, 19D
1947	Alfred E. Driscoll (R)	15R, 6D	48R, 12D
1948		17R, 4D	45R, 15D				Thomas E. Dewey/ Earl Warren (R)N
1949		15R, 6D	44R, 16D		Robert C. Hendrickson (R)	9R, 5D
1950		14R, 7D	38R, 22D
1951
1952		16R, 5D	43R, 17D				Dwight D. Eisenhower/ Richard Nixon (R)Y
1953						8R, 6D
1954	Robert B. Meyner (D)	17R, 4D	40R, 20D
1955					Clifford P. Case (R)
1956		14R, 7D
1957						10R, 4D
1958		13R, 8D	42D, 18R
1959				Harrison A. Williams (D)		9R, 5D
1960		11R, 10D	34D, 26R				John F. Kennedy/ Lyndon B. Johnson (D)Y
1961						8R, 6D
1962	Richard J. Hughes (D)		38D, 22R
1963						8R, 7D
1964		15R, 6D	33R, 27D				Lyndon B. Johnson/ Hubert Humphrey (D)Y
1965						11D, 4R
1966		19D, 10R	41D, 19R
1967						9D, 6R
1968		31R, 9D	58R, 22D				Richard Nixon/ Spiro Agnew (R)Y
1969
1970	William T. Cahill (R)		59R, 21D
1971
1972		24R, 16D	40D, 39R, 1I [s]
1973						8D, 7R
1974	Brendan Byrne (D)	29D, 10R, 1I	66D, 14R
1975						12D, 3R
1976			49D, 31R				Gerald Ford/ Bob Dole (R)N
1977						11D, 4R
1978		27D, 13R	54D, 26R
1979					Bill Bradley (D)	10D, 5R
1980		26D, 14R	44D, 36R				Ronald Reagan/ George H. W. Bush (R)Y
1981						8D, 7R
1982	Thomas Kean (R)	22D, 18R	43D, 37R
				Nicholas F. Brady (R)
1983				Frank Lautenberg (D)		9D, 5R
1984		23D, 17R	44D, 36R
1985						8D, 6R
1986			50R, 30D
1987
1988		24D, 16R	42R, 38D				George H. W. Bush/ Dan Quayle (R)Y
1989
1990	James Florio (D)	23D, 17R	42D, 38R
1991
1992		27R, 13D	58R, 22D				Bill Clinton/ Al Gore (D)Y
1993						7D, 6R
1994	Christine Todd Whitman (R) [t]	24R, 16D	53R, 27D
1995						8R, 5D
1996			50R, 30D
1997					Robert Torricelli (D)	7R, 6D
1998			48R, 32D
1999						7D, 6R
2000			45R, 35D				Al Gore/ Joe Lieberman (D)N
2001				Jon Corzine (D) [u]
	Donald DiFrancesco (R) [v] [w]
2002	Various [x]	20D, 20R [y]	44D, 36R
	Jim McGreevey (D) [z]
2003					Frank Lautenberg (D)
2004		22D, 18R	47D, 33R				John Kerry/ John Edwards (D)N
	Richard Codey (D) [aa] [w]
2005
2006	Jon Corzine (D)		49D, 31R	Bob Menendez (D) [ab]		6D, 6R
						7D, 6R
2007
2008		23D, 17R	48D, 32R				Barack Obama/ Joe Biden (D)Y
2009						8D, 5R

2010–present

Year	Executive offices		State Legislature		United States Congress			Electoral votes
	Governor	Lt. Governor	Senate	Assembly	Senator (Class I)	Senator (Class II)	House
2010	Chris Christie (R)	Kim Guadagno (R)	23D, 17R	47D, 33R	Bob Menendez (D) [ac]	Frank Lautenberg (D)	8D, 5R	Barack Obama/ Joe Biden (D)Y
2011			24D, 16R [ad]				7D, 6R
2012				48D, 32R
2013							6D, 6R
						Jeffrey Chiesa (R) [ab]
						Cory Booker (D)
2014							6R, 5D [ae]
2015							6D, 6R
2016				52D, 28R				Hillary Clinton/ Tim Kaine (D)N
2017							7D, 5R
2018	Phil Murphy (D)	Sheila Oliver (D) [af]	25D, 15R	54D, 26R
2019							11D, 1R
			26D, 14R [ag]
2020			25D, 15R	52D, 28R			10D, 2R [ah]	Joe Biden/ Kamala Harris (D)Y
2021
2022			24D, 16R	46D, 34R
2023			25D, 15R [ai]				9D, 3R
		Tahesha Way (D) [ab]
2024				52D, 28R				Kamala Harris/ Tim Walz (D)N
					George Helmy (D) [ab]
2025					Andy Kim (D)
2026	Mikie Sherrill (D)	Dale Caldwell (D)		TBD

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. Acting.
2. Abraham Clark, a member of the Pro-Administration Party, died September 15, 1794, and Aaron Kitchell was elected to fill his vacancy.
3. A Federalist, William Coxe Jr., was elected Speaker, and the Federalists organized the chamber.
4. Jacob Hufty, a Federalist, died on May 20, 1814, and was replaced by Thomas Bines, a Democratic-Republican, on November 2, 1814.
5. A Whig, Elias P. Seeley, was elected as Vice President of the Legislative Council.
6. A Democrat, Jeptha B. Munn, was elected as Vice President of the Legislative Council with the absence of a Whig member of the Council. ^[2]
7. A Democrat, John Cassedy, was elected as Vice President of the Legislative Council.
8. A Democrat, Silas D. Canfield, was elected as President of the Senate.
9. A Democrat, William Cowper Alexander, was elected to be Senate President.
10. A coalition of Whigs and Know-Nothings elected a Whig, William Parry, as Speaker, and organized the chamber.
11. A Democrat, Austin H. Patterson, was elected Speaker.
12. A War Democrat, Joseph T. Crowell, was elected President of the Senate with Republican support. ^[3]
13. After some days of discussion, a Democrat, Joseph T. Crowell, was elected Speaker. ^[4]
14. After several days of ballots, a Democrat, Rudolph Rabe, was elected Speaker of the Assembly. ^[5]
15. Resigned in order to become United States Attorney General.
16. Resigned in order to become President of the United States.
17. Resigned in order to become a United States senator.
18. With the split chamber between the parties, a Republican, Arthur N. Pierson, was selected as Speaker after his name was drawn from a hat. ^[6]
19. Although the Democrats were the largest party, four Democrats led by David Friedland cut a deal to elect Republican Thomas Kean Speaker in exchange for leading various House committees and becoming a part of their caucus. ^[7]
20. Resigned to become Administrator of the Environmental Protection Agency.
21. Resigned after election as governor.
22. State Senate president who held the title of acting governor.
23. Per legislation signed by Codey on January 10, 2006, any acting Governor who serves for at least 6 months would officially have the title "governor." This law applied retroactively to DiFrancesco as well.
24. From January 8 to January 15, 2002, four men served as Acting Governor. Upon the resignation of Acting Gov. Donald DiFrancesco (R) and before the swearing in of the General Assembly, Attorney General John Farmer Jr. (R) served as Acting Governor for approximately 90 minutes. Upon the swearing of the General Assembly, Robert E. Littell (R), the longest-serving member of the State Senate, assumed the title of President of the Senate (and therefore Acting Governor) for just a few minutes before swearing in the Co-Presidents of the New Jersey Senate, John O. Bennett (R) and Richard Codey (D), who agreed to split the remaining time in Todd Whitman's term evenly, each serving as Acting Governor for three and a half days.
25. A power-sharing agreement was negotiated, with John O. Bennett and Richard Codey running the chamber as co-Presidents. Each committee also had split party control.
26. Resigned in August 2004, effective November 15, 2004.
27. Became acting governor on November 15, 2004, following resignation of McGreevey.
28. Appointed to fill a vacancy.
29. Resigned following his conviction in a federal corruption trial.
30. Appointed State Senator Tom Goodwin (R) was defeated by Assemblywoman Linda R. Greenstein (D) in a special election.
31. Representative Rob Andrews, Democrat of New Jersey's 1st congressional district, resigned.
32. Died in office
33. Republican Senator Dawn Addiego switched to the Democratic Party.
34. Democratic Representative Jeff Van Drew switched to the Republican Party.
35. Republican Senator Samuel D. Thompson switched to the Democratic Party.

See also

• Politics in New Jersey
• Politics of New Jersey
• Elections in New Jersey
• Law of New Jersey

References

1. https://www.nj.gov/state/elections/assets/pdf/svrs-reports/2025/2025-11-voter-registration-by-county.pdf
2. Niles, Hezekiah, ed. (1837). Niles' Weekly Register. p. 129.
3. Gillette, William (1995). Jersey blue : Civil War politics in New Jersey, 1854-1865. New Brunswick, N.J.: Rutgers University Press. p. 180. ISBN   9780813526942.
4. Manual of the Legislature of New Jersey. J.A. Fitzgerald. 1910. p. 412.
5. Mowbray, Jay Henry (1898). Representative Men of New York: A Record of Their Achievements. New York Press. p. 146.
6. "ARTHUR PIERSON, EX-LEGISLATOR, 89; Former Jersey State Senator and Assemblyman Dies-- an Expert on Finance". The New York Times. 1957-03-09.
7. "The amazing story of David Friedland". Observer. 2009-02-26.

External links

• State of New Jersey Department of State, Division of Elections
  • Year-by-Year Election Results