In May 2000 the Haitian legislative election, 2000 for the Chamber of Deputies and two-thirds of the Senate took place. The election drew a voter turnout of more than 60%, and the FL won a virtual sweep. However, the elections were marred by controversy in the Senate race over the calculation of whether Senate candidates had achieved the majority required to avoid a run-off election (in Haiti, seats where no candidate wins an absolute majority of votes cast has to enter a second-round run-off election). The validity of the Electoral Council's post-ballot calculations of whether a majority had been attained was disputed. The Organization of American States complained about the calculation and declined to observe the July run-off elections. The opposition parties, regrouped in the Democratic Convergence (Convergence Démocratique, CD), demanded that the elections be annulled, and that Préval stand down and be replaced by a provisional government. In the meantime, the opposition announced it would boycott the November presidential and senatorial elections. Haiti's main aid donors threatened to cut off aid. At the November 2000 elections, boycotted by the opposition, Aristide was again elected president, with more than 90% of the vote, on a turnout of around 50% according to international observers. The opposition refused to accept the result or to recognize Aristide as president.