Because Barack Obama beat Hillary Clinton down and in the primaries for the democratic nomination for president.
A Democrat could run for the Democratic nomination against an incumbent Democratic President. This happened in 1980 , for example, when Ted Kennedy ran against President Carter. A democrat would not run on the same party lines as another Democrat since the Democratic party can only nominate one candidate themselves. So a third party could nominate a Democrat to run for president if that Democrat lost the Democratic nomination to someone else.
John Glenn ran for the Democratic presidential nomination in 1984. He lost to Walter Mondale.
that he would not seek reelection.
The Democratic Party in 1992 nominated William Jefferson (Bill) Clinton, the governor of Arkansas, and his Vice Presidential running mate, Senator Albert (Al) Gore of Tennessee.
The President Barrack Obama who secured the Democratic nomination with no serious opposition.
Robert Kennedy seemed to have almost a lock on the Democratic nomination in 1968 when he was killed.
can hillary Clinton get the democratic nomination over an incumbent president in 2012
to this day, Barack Obama
He accepted the nomination at the Democratic party's national convention, which was held in Charlotte NC. His acceptance speech occurred on Thursday night, the 6th of September 2012.
Senator Ted Kennedy challenged President Carter for the Democratic nomination in the 1980 primaries. Despite a spirited campaign, Kennedy ultimately lost to Carter, who went on to be the Democratic candidate in the general election, where he lost to Republican candidate Ronald Reagan.
Shirley Chisholm was the African American who tried to become President of the United States in 1972. She did not win the Democratic nomination that she needed to get on the ballot.
No- he was assassinated while he running for the Democratic nomination in 1968,
Ted Kennedy of Massachusetts.