Divided government in the United States

In the United States, divided government describes a situation in which one party controls the White House (executive branch), while another party controls one or both houses of the United States Congress (legislative branch). Divided government is seen by different groups as a benefit or as an undesirable product of the model of governance used in the U.S. political system. Under said model, known as the separation of powers, the state is divided into different branches. Each branch has separate and independent powers and areas of responsibility so that the powers of one branch are not in conflict with the powers associated with the others. The degree to which the president of the United States has control of Congress often determines their political strength, such as the ability to pass sponsored legislation, ratify treaties, and have Cabinet members and judges approved. Early in the 19th century, divided government was rare but since the 1970s it has become increasingly common.

The model can be contrasted with the fusion of powers in a parliamentary system where the executive and legislature (and sometimes parts of the judiciary) are unified. Those in favor of divided government believe that such separations encourage more policing of those in power by the opposition, as well as limiting spending and the expansion of undesirable laws.^[1] Opponents, however, argue that divided governments become lethargic, leading to many gridlocks. In the late 1980s, Terry M. Moe, a professor of political science at Stanford University, examined the issue.^[2] He concluded that divided governments lead to compromise which can be seen as beneficial, but he also noticed that divided governments subvert performance and politicize the decisions of executive agencies. Additionally, further research has shown that during divided governments, legislatures will pass laws with sunset provisions in order to achieve a political consensus.^[3]

Party control of legislative and executive branches

Party control of the U.S. Senate and House of Representatives (including president's party): 1855–2025^[4]^[5]^[6]

List

Key

D denotes the Democratic Party, R denotes the Republican Party.
Bold indicates a divided government.

Year	Senate	House	President party	President
1861–1863	R	R	R	Lincoln
1863–1865	R	R	R	Lincoln
1865–1867	R	R	D	A. Johnson
1867–1869	R	R	D	A. Johnson
1869–1871	R	R	R	Grant
1871–1873	R	R	R
1873–1875	R	R	R
1875–1877	R	D	R
1877–1879	R	D	R	Hayes
1879–1881	D	D	R	Hayes
1881–1883	R^[a]	R	R	Garfield / Arthur
1883–1885	R	D	R	Arthur
1885–1887	R	D	D	Cleveland
1887–1889	R	D	D	Cleveland
1889–1891	R	R	R	Harrison
1891–1893	R	D	R	Harrison
1893–1895	D	D	D	Cleveland
1895–1897	R	R	D	Cleveland
1897–1899	R	R	R	McKinley
1899–1901	R	R	R	McKinley
1901–1903	R	R	R	McKinley / T. Roosevelt
1903–1905	R	R	R	T. Roosevelt
1905–1907	R	R	R
1907–1909	R	R	R
1909–1911	R	R	R	Taft
1911–1913	R	D	R	Taft
1913–1915	D	D	D	Wilson
1915–1917	D	D	D
1917–1919	D	D^[b]	D
1919–1921	R	R	D
1921–1923	R	R	R	Harding
1923–1925	R	R	R	Harding / Coolidge
1925–1927	R	R	R	Coolidge
1927–1929	R	R	R	Coolidge
1929–1931	R	R	R	Hoover
1931–1933	R	D	R	Hoover
1933–1935	D	D	D	F. Roosevelt
1935–1937	D	D	D
1937–1939	D	D	D
1939–1941	D	D	D
1941–1943	D	D	D
1943–1945	D	D	D
1945–1947	D	D	D	F. Roosevelt / Truman
1947–1949	R	R	D	Truman
1949–1951	D	D	D
1951–1953	D	D	D
1953–1955	R^[c]	R	R	Eisenhower
1955–1957	D	D	R
1957–1959	D	D	R
1959–1961	D	D	R
1961–1963	D	D	D	Kennedy
1963–1965	D	D	D	Kennedy / Johnson
1965–1967	D	D	D	Johnson
1967–1969	D	D	D	Johnson
1969–1971	D	D	R	Nixon
1971–1973	D	D	R	Nixon
1973–1975	D	D	R	Nixon / Ford
1975–1977	D	D	R	Ford
1977–1979	D	D	D	Carter
1979–1981	D	D	D	Carter
1981–1983	R	D	R	Reagan
1983–1985	R	D	R
1985–1987	R	D	R
1987–1989	D	D	R
1989–1991	D	D	R	G.H.W. Bush
1991–1993	D	D	R	G.H.W. Bush
1993–1995	D	D	D	Clinton
1995–1997	R	R	D
1997–1999	R	R	D
1999–2001	R	R	D
2001–2003	D^[d]	R	R	G.W. Bush
2003–2005	R	R	R
2005–2007	R	R	R
2007–2009	D	D	R
2009–2011	D	D	D	Obama
2011–2013	D	R	D
2013–2015	D	R	D
2015–2017	R	R	D
2017–2019	R	R	R	Trump
2019–2021	R	D	R	Trump
2021–2023	D^[e]	D	D	Biden
2023–2025	D	R	D	Biden
Year	Senate	House	President party	President

Presidential impact

Many presidents' elections produced what is known as a coattail effect, in which the success of a presidential candidate also leads to electoral success for other members of their party. In fact, all newly elected presidents except Zachary Taylor, Richard Nixon, and George H. W. Bush were accompanied by control of at least one house of Congress.

Presidents by congressional control and terms

Most columns are in numbers of years.

No.	President	President's party		Elections won	Years served	Senate with	Senate opposed	House with	House opposed	Congress with	Congress divided	Congress opposed
1	George Washington	None		2	8	8	0	4	4	4	4	0
2	John Adams	Federalist		1	4	4	0	4	0	4	0	0
3	Thomas Jefferson	Democratic-Republican		2	8	8	0	8	0	8	0	0
4	James Madison	Democratic-Republican		2	8	8	0	8	0	8	0	0
5	James Monroe	Democratic-Republican		2	8	8	0	8	0	8	0	0
6	John Quincy Adams	Democratic-Republican	National-Republican	1	4	0	4	2	2	0	2	2
7	Andrew Jackson	Democratic		2	8	6	2	8	0	6	2	0
8	Martin Van Buren	Democratic		1	4	4	0	4	0	4	0	0
9	William Harrison	Whig		1	0.1	0.1	0	0.1	0	0.1	0	0
10	John Tyler	Whig	Independent	0	3.9	3.9	0	1.9	2	1.9	2	0
11	James Polk	Democratic		1	4	4	0	2	2	2	2	0
12	Zachary Taylor	Whig		1	1	0	1	0	1	0	0	1
13	Millard Fillmore	Whig		0	3	0	3	0	3	0	0	3
14	Franklin Pierce	Democratic		1	4	4	0	2	2	2	2	0
15	James Buchanan	Democratic		1	4	4	0	2	2	2	2	0
16	Abraham Lincoln	Republican	National Union	2	4.1	4.1	0	4.1	0	4.1	0	0
17	Andrew Johnson	Democratic	National Union	0	3.9	0	3.9	0	3.9	0	0	3.9
18	Ulysses Grant	Republican		2	8	8	0	6	2	6	2	0
19	Rutherford Hayes	Republican		1	4	2	2	0	4	0	2	2
20	James Garfield	Republican		1	0.5	0^[a]	0.5	0.5	0	0	0.5	0
21	Chester Arthur	Republican		0	3.5	3.5^[a]	0	1.5	2	1.5	2	0
22	Grover Cleveland	Democratic		1	4	0	4	4	0	0	4	0
23	Benjamin Harrison	Republican		1	4	4	0	2	2	2	2	0
24	Grover Cleveland	Democratic		1	4	2	2	2	2	2	0	2
25	William McKinley	Republican		2	4.5	4.5	0	4.5	0	4.5	0	0
26	Theodore Roosevelt	Republican		1	7.5	7.5	0	7.5	0	7.5	0	0
27	William Taft	Republican		1	4	4	0	2	2	2	2	0
28	Woodrow Wilson	Democratic		2	8	6	2	6^[b]	2	6	0	2
29	Warren Harding	Republican		1	2.4	2.4	0	2.4	0	2.4	0	0
30	Calvin Coolidge	Republican		1	5.6	5.6	0	5.6	0	5.6	0	0
31	Herbert Hoover	Republican		1	4	4	0	2	2	2	2	0
32	Franklin Roosevelt	Democratic		4	12.2	12.2	0	12.2	0	12.2	0	0
33	Harry Truman	Democratic		1	7.8	5.8	2	5.8	2	5.8	0	2
34	Dwight Eisenhower	Republican		2	8	2^[c]	6	2	6	2	0	6
35	John Kennedy	Democratic		1	2.8	2.8	0	2.8	0	2.8	0	0
36	Lyndon Johnson	Democratic		1	5.2	5.2	0	5.2	0	5.2	0	0
37	Richard Nixon	Republican		2	5.6	0	5.6	0	5.6	0	0	5.6
38	Gerald Ford	Republican		0	2.4	0	2.4	0	2.4	0	0	2.4
39	Jimmy Carter	Democratic		1	4	4^[f]	0^[f]	4	0	4	0	0
40	Ronald Reagan	Republican		2	8	6	2	0	8	0	6	2
41	George H. W. Bush	Republican		1	4	0	4	0	4	0	0	4
42	Bill Clinton	Democratic		2	8	2^[g]	6	2	6	2	0	6
43	George W. Bush	Republican		2	8	4.5^[d]	3.5^[d]	6	2	4.5	1.5	2
44	Barack Obama	Democratic		2	8	6	2	2	6	2	4	2
45	Donald Trump	Republican		1	4	4	0	2	2	2	2	0
46	Joe Biden	Democratic		1	3	3^[e]	0	2	1	2	1	0
No.	President	President's party		Elections won	Years served	Senate with	Senate opposed	House with	House opposed	Congress with	Congress divided	Congress opposed

Notes

^ ^a ^b ^c The 1880-81 elections resulted in a 37-37 tie in the Senate, with 1 Readjuster and 1 Independent caucusing with the opposite parties. The Constitution gives tie-breaking power to the vice president, which was Republican Chester A. Arthur for part of the 47th Congress, then left vacant after his accession.
^ ^a ^b The 1916 elections resulted in the Republican Party winning a plurality of seats, but the Democratic Party formed a coalition government with the Progressive Party and Socialist Party.
^ ^a ^b The 1952 elections resulted in a 49-47 Republican majority, but Wayne Morse switched to become an Independent, and vacancies resulted in a tied Senate for part of the Congress. The Constitution gives tie-breaking power to the vice president, which for most of the 83rd Congress was Republican Richard Nixon.
^ ^a ^b ^c The 2000 elections resulted in a 50–50 tie in the Senate, and the Constitution gives tie-breaking power to the vice president. The vice president during most of the 107th Congress was Republican Dick Cheney. Then on May 24, 2001, Republican Senator Jim Jeffords of Vermont left the Republican Party to caucus with the Democrats as an independent, resulting in Democrats gaining the Senate majority.
^ ^a ^b The 2020 elections resulted in a 50–50 tie in the Senate, and the Constitution gives tie-breaking power to the vice president. The vice president during most of the 117th Congress was Democrat Kamala Harris.
^ ^a ^b Carter served the last 17 days of his presidency with a Republican majority Senate.
^ Clinton served the last 17 days of his 2nd term with a 50-50 majority in the senate, and the Constitution gives tie-breaking power to the vice president. During this brief period, Democrat Al Gore was the tie breaker until Republican Dick Cheney was sworn in and broke the tie in favor of the Republicans.