In 1800, President John Adams lost to Thomas Jefferson.
In 1828, President John Quincy Adams lost to Andrew Jackson.
In 1840, President Martin Van Buren lost to William Henry Harrison.
In 1888, President Grover Cleveland lost to Benjamin Harrison.
In 1892, President Benjamin Harrison lost to former President Grover Cleveland.
In 1912, President William Howard Taft lost to Woodrow Wilson.
In 1932, President Herbert Hoover lost to Franklin D. Roosevelt.
In 1976, President Gerald Ford lost to Jimmy Carter.
In 1980, President Jimmy Carter lost to Ronald Reagan.
In 1992, President George H. W. Bush lost to Bill Clinton.
George Bush 41 lost his bid for a second term to Bill Clinton.
Richard Nixon
George B. McClellan
There were no term limits on the presidency when Pierce was President. Pierce made an effort to get the nomination for a second term, but lost and so served only the one term as President.
Thomas Jefferson was the president during Thomas Jefferson's second term as president.
Yes. Grover Cleveland won in 1884, lost his bid for re-election in 1888 but won a second term in 1892. He was the only president to try again after being defeated in a bid for a second term.
Yes, there have been instances where an incumbent president has lost the nomination for their party. One notable example is President Franklin Pierce, who failed to secure the Democratic Party's nomination for a second term in 1856.
George McGovern (Democrat) lost to Richard Nixon (Republican).
George W. Bush, Sr. President Bush served his first and only term from 1989 to 1993. He lost his reelection bid in 1992 to Bill Clinton.
The only U.S. president who was never elected as president or vice president is Gerald Ford. He was a Congressman who was appointed to office. He ran for a second term, but lost to Jimmy Carter.
Jefferson did go for a second term as President.
President's term is four years but can be re-elected for a second term.