query: By what margin did Carlos Saúl Menem Akil win the presidential election?
passage: Carlos Menem
Military rule ended in 1983, and the radical Raúl Alfonsín was elected president. Menem ran for governor again, and was elected by a clear margin. The province benefited from tax regulations established by the military, which allowed increased industrial growth. His party got control of the provincial legislature, and he was re-elected in 1987 with 63% of the vote. The PJ was divided in two factions, the conservatives that still supported the political doctrines of Juan and Isabel Perón, and those who proposed a renovation of the party. The internal disputes ceased in 1987. Menem, with his prominent victory in his district, was one of the leading figures of the party, and disputed its leadership.[1]
passage: Geraldo Alckmin
Contrary to all major polls taken in the run-up to the October 1, 2006 balloting, Alckmin surprised almost everyone and came in second place in the presidential election. His 41.64% of the vote, along with votes cast for two less significant candidates, as well as ballots that were left blank or spoiled, was enough to deny the simple majority necessary to re-elect incumbent President Luiz Inácio Lula da Silva ("Lula") in the first round. Lula and Alckmin faced one another in a run-off election on October 29, 2006. Alckmin received 39% of the vote, losing to Lula, who received 61% of the vote and was then reelected.