John Adams, John Qunicy Adams, Martin Van Buren, Benjamin Harrison, William Howard Taft, Herbert Hoover, Jimmy Carter, and George H.W. Bush
McKinney wasn't elected in 1990. He was dead by 1990.
The list of incumbents that won reelection between 1945 and 1990 include Harry S. Truman, Dwight D. Eisenhower, Lyndon B. Johnson, Richard Nixon, and Ronald Reagan. The next to win reelection was Bill Clinton who served from 1993 until 2001.
No Limit
In the world, there are several presidential elections going on this year, but I will assume you are talking about the U.S. Yes, Barack Obama is running for reelection.
There were four American presidents who tried to win presidency but failed the first time. They are Millard Fillmore, Richard Nixon, Ronald Reagan, and George Bush, Sr.
Presidents who ran for reelection and lost after the year 1900 were William H. Taft (1912), Herbert Hoover (1932), Jimmy Carter (1980), and George Bush Sr. (1992). Gerald R. Ford ran and lost in 1976, but he was never technically elected in the first place.
Six years; presidents are non-eligible for reelection.
Ma, Ferguson
McKinney wasn't elected in 1990. He was dead by 1990.
yes
Most of the Presidents who were relected, were popular with the voters 4 years after they were elected to their first term. A few reelected Presidents, such as LBJ in 1968 and RM Nixon in 1974, lost their popularity after reelection.
Some Presidents had more than one Vice-President. Reasons include the death of a VP, or taking a new running-mate when running for reelection.
There are several tactics that are used to win reelection. Changing one's political party is not a common tactic of winning reelections.
It's The Presidents trophy and it's just over 30%
Only 15 or 42 US presidents have won at least two consecutive terms. This gives about 36%. About 70 percent of those who have served as president since 1825 (or 26 of 37 men) failed to win the election for two consecutive terms. This is either because they died, didn't run again, or lost their party or national election. In the US, of the 42 presidents before Obama, only 15 won reelection. 12 didn't run again (because of death, etc.), 18 lost in either their bid for party nomination or in a national election.
Franklin Roosevelt
The victories boosted Lincoln's popularity, helping him win reelection.