The president of the United States is elected every four years through the electoral college, which is a group of people gathering together to make the official votes for the president and vice president of the united states.
There are 538 electoral votes in the united states, and the number of votes varies from state to state. The number of electoral votes in a state is roughly aligned with the state's population.
The president of the United States is the head of the state and the head of the government. The following is the list of US presidents since 1789.
| # | President | From | To | Party |
|---|---|---|---|---|
| 1 | George Washington | Apr 30, 1789 | Mar 4, 1797 | None |
| 2 | John Adams | Mar 4, 1797 | Mar 4, 1801 | Federalist |
| 3 | Thomas Jefferson | Mar 4, 1801 | Mar 4, 1809 | Democratic- Republican |
| 4 | James Madison | Mar 4, 1809 | Mar 4, 1817 | Democratic- Republican |
| 5 | James Monroe | Mar 4, 1817 | Mar 4, 1825 | Democratic- Republican |
| 6 | John Quincy Adams | Mar 4, 1825 | Mar 4, 1829 | Democratic- Republican National Republican |
| 7 | Andrew Jackson | Mar 4, 1829 | Mar 4, 1837 | Democratic |
| 8 | Martin Van Buren | Mar 4, 1837 | Mar 4, 1841 | Democratic |
| 9 | William Henry Harrison | Mar 4, 1841 | Apr 4, 1841 | Whig |
| 10 | John Tyler | Apr 4, 1841 | Mar 4, 1845 | Whig |
| 11 | James K. Polk | Mar 4, 1845 | Mar 4, 1849 | Democratic |
| 12 | Zachary Taylor | Mar 4, 1849 | July 9, 1850 | Whig |
| 13 | Millard Fillmore | July 9, 1850 | Mar 4, 1853 | Whig |
| 14 | Franklin Pierce | Mar 4, 1853 | Mar 4, 1857 | Democratic |
| 15 | James Buchanan | Mar 4, 1857 | Mar 4, 1861 | Democratic |
| 16 | Abraham Lincoln | Mar 4, 1861 | Apr 15, 1865 | Republican National Union |
| 17 | Andrew Johnson | Apr 15, 1865 | Mar 4, 1869 | National Union Democratic |
| 18 | Ulysses S. Grant | Mar 4, 1869 | Mar 4, 1877 | Republican |
| 19 | Rutherford Hayes | Mar 4, 1877 | Mar 4, 1881 | Republican |
| 20 | James A. Garfield | Mar 4, 1881 | Sep 19, 1881 | Republican |
| 21 | Chester A. Arthur | Sep 19, 1881 | Mar 4, 1885 | Republican |
| 22 | Grover Cleveland | Mar 4, 1885 | Mar 4, 1889 | Democratic |
| 23 | Benjamin Harrison | Mar 4, 1889 | Mar 4, 1893 | Republican |
| 24 | Grover Cleveland | Mar 4, 1893 | Mar 4, 1897 | Democratic |
| 25 | William McKinley | Mar 4, 1897 | Sep 14, 1901 | Republican |
| 26 | Theodore Roosevelt | Sep 14, 1901 | Mar 4, 1909 | Republican |
| 27 | William Howard Taft | Mar 4, 1909 | Mar 4, 1913 | Republican |
| 28 | Woodrow Wilson | Mar 4, 1913 | Mar 4, 1921 | Democratic |
| 29 | Warren G. Harding | Mar 4, 1921 | Aug 2, 1923 | Republican |
| 30 | Calvin Coolidge | Aug 2, 1923 | Mar 4, 1929 | Republican |
| 31 | Herbert Hoover | Mar 4, 1929 | Mar 4, 1933 | Republican |
| 32 | Franklin D. Roosevelt | Mar 4, 1933 | Apr 12, 1945 | Democratic |
| 33 | Harry S. Truman | Apr 12, 1945 | Jan 20, 1953 | Democratic |
| 34 | Dwight D. Eisenhower | Jan 20, 1953 | Jan 20, 1961 | Republican |
| 35 | John F. Kennedy | Jan 20, 1961 | Nov 22, 1963 | Democratic |
| 36 | Lyndon B. Johnson | Nov 22, 1963 | Jan 20, 1969 | Democratic |
| 37 | Richard Nixon | Jan 20, 1969 | Aug 9, 1974 | Republican |
| 38 | Gerald Ford | Aug 9, 1974 | Jan 20, 1977 | Republican |
| 39 | Jimmy Carter | Jan 20, 1977 | Jan 20, 1981 | Democratic |
| 40 | Ronald Reagan | Jan 20, 1981 | Jan 20, 1989 | Republican |
| 41 | George H. W. Bush | Jan 20, 1989 | Jan 20, 1993 | Republican |
| 42 | Bill Clinton | Jan 20, 1993 | Jan 20, 2001 | Democratic |
| 43 | George W. Bush | Jan 20, 2001 | Jan 20, 2009 | Republican |
| 44 | Barack Obama | Jan 20, 2009 | Jan 20, 2017 | Democratic |
| 45 | Donald Trump | Jan 20, 2017 | Jan 20, 2021 | Republican |
| 46 | Joe Biden | Jan 20, 2021 | current | Democratic |