Edward "Ted" Kennedy challenged President Jimmy Carter for the nomination in the 1980 Democratic primaries.
Ted Kennedy of Massachusetts.
Because Barack Obama beat Hillary Clinton down and in the primaries for the democratic nomination for president.
He or she would have to start by entering primaries and competing at caucuses and then finally win the nomination of the party at its convention.
Prior to President Johnsons withdrawal from the election (March 31st 1968) his primary opponents for the Democratic nomination were... Robert F Kennedy Eugene McCarthy Hubert Humphrey George McGovern
Barack Obama is the only president to have a viable female opponent and that was only for the Democratic nomination. Hilliary Clinton made a strong shpwing in the primaries in 2008 but Obama eventually prevailed.
It's happened several times. Most recently in 1980 when Ted Kennedy challenged the incumbent President Jimmy Carter. Kennedy fought all the way to the convention. The last sitting Republican President to be seriously challenged was Gerald Ford in 1976 by . . . future President Ronald Reagan. Reagan also fought all the way to the convention. Notably, in both of these cases, the challenged President managed to earn his Party's nomination but was unsuccessful in the general election.
Hillary Clinton, wife of Bill Clinton made a serious run in the primaries for the presidential nomination.
Shirley Chisholm, Congressman from NY, received some votes for nominee at the Democratic Convention of 1972. She was not considered as a serious candidate. In 1984 and 1988, Rev. Jesse Jackson vied for the Democratic nomination. He won 5 primaries and 8% of the delegates to finish third. In 1988 he won 11 primaries and at one time looked like the front-runner for the nomination, but lost his momentum later. Of course, Obama, who had a black father, won the nomination in 2008.
Robert Kennedy was never a candidate. He was assassinated during the primaries. Hubert Humphrey wound up with the Democratic nomination that year (1968) and was defeated by Richard Nixon.
A. George McGovern B. Robert Kennedy C. Hubert Humphrey D. Eugene McCarthy George McGovern did not run for president in the Democratic primaries in 1968
She was not nominated , but she entered primaries and made a serious campaign for the Democratic nomination. No woman has ever been nominated for president by a major party. There have been some women who ran as protest candidates with no hope of winning.
The delegates counts are the numbers of electors each candidate gets on election night. Both are trying to get 270.