Final answer:
Jesse Jackson ran for President in both 1984 and 1988, finishing third in the Democratic primaries in 1984 and having a more successful campaign in 1988 focused on workers' issues.
Step-by-step explanation:
Jesse Jackson ran for President of the United States in both 1984 and 1988. In 1984, his campaign was the second national campaign by an African American after Shirley Chisholm's in 1972. Jackson finished third in the Democratic primaries, which gave him greater credibility for his more successful candidacy in 1988. In 1988, Jackson's campaign focused on workers and issues such as eliminating mandatory minimum sentences and providing universal health care and free community college.