The Dukakis and Kerry ticket defeated the Republican ticket of John W. Sears and Leon Lombardi in the general election by 1,219,109 votes (61.92%) to 749,679 (38.08%). As Lieutenant Governor, Kerry led meetings of the Massachusetts Governor's Council. Dukakis also delegated other tasks to Kerry, including serving as the state's liaison to the Federal government of the United States. He was also active on environmental issues, including combating acid rain. 1984 U.S. Senate election The junior U.S. senator from Massachusetts, Paul Tsongas, announced in 1984 that he would be stepping down for health reasons. Kerry ran, and as in his 1982 race for Lieutenant Governor, he did not receive the endorsement of the party regulars at the state Democratic convention. Congressman James Shannon, a favorite of House Speaker Tip O'Neill, was the early favorite to win the nomination, and he "won broad establishment support and led in early polling." Again as in 1982, however, Kerry prevailed in a close primary. In his general election campaign, Kerry promised to mix liberalism with tight budget controls. He defeated Republican Ray Shamie despite a nationwide landslide for the re-election of Republican President Ronald Reagan, for whom Massachusetts voted by a narrow margin. In his victory speech, Kerry asserted that his win meant that the people of Massachusetts "emphatically reject the politics of selfishness and the notion that women must be treated as second-class citizens." Tsongas resigned on January 2, 1985, one day before the end of his term. Dukakis appointed Kerry to fill the vacancy, giving him seniority over other new senators who were sworn in on January 3, the scheduled start of their new terms. U.S. Senate (1985–2013) Iran–Contra hearings On April 18, 1985, a few months after taking his Senate seat, Kerry and Senator Tom Harkin of Iowa traveled to Nicaragua and met the country's president, Daniel Ortega. Although Ortega had won internationally certified elections, the trip was criticized because Ortega and his leftist Sandinista government had strong ties to Cuba and the USSR and were accused of human rights abuses. The Sandinista government was opposed by the right-wing CIA-backed rebels known as the Contras. While in Nicaragua, Kerry and Harkin talked to people on both sides of the conflict. Through the senators, Ortega offered a cease-fire agreement in exchange for the U.S. dropping support of the Contras. The offer was denounced by the Reagan administration as a "propaganda initiative" designed