 In the 1970 presidential election, Senator Salvador Allende Gossens won a plurality of votes in a three-way contest.He was a Marxist physician and member of Chile's Socialist Party, who headed the "Popular Unity" (UP or "Unidad Popular") coalition of the Socialist, Communist, Radical, and Social-Democratic Parties, along with dissident Christian Democrats, the Popular Unitary Action Movement (MAPU), and the Independent Popular Action.Allende had two main competitors in the election — Radomiro Tomic, representing the incumbent Christian Democratic party, who ran a left-wing campaign with much the same theme as Allende's, and the right-wing former president Jorge Alessandri.