Jesse Jackson 1984 presidential campaign
In 1984, Jesse Jackson became the second African American (after Shirley Chisholm) to mount a nationwide campaign for President of the United States, running as a Democrat. In the primaries, Jackson, who had been written off by pundits as a fringe candidate with little chance at winning the nomination, surprised many when he took third place overall, behind Senator Gary Hart and former Vice President Walter Mondale, who eventually won the nomination.
Source: Wikipedia — Jesse Jackson 1984 presidential campaign (CC BY-SA 4.0)