New York City Board of Estimate presidents of Manhattan and Brooklyn, each having two votes; and the borough presidents of the Bronx, Queens, and Richmond (Staten Island), each having one vote. (The 1897 charter effective on amalgamation had had a five-member Board of Estimate and Apportionment.) The La Guardia Reform Charter of 1938 simplified its name and enhanced its powers. On March 22, 1989, the Supreme Court of the United States unanimously declared in "Board of Estimate of City of New York v. Morris" that the Board of Estimate was unconstitutional on the grounds that Brooklyn, the city's most populous borough, had no greater effective representation
1993 New York City mayoral election in Staten Island; a referendum on Staten Island's secession from New York City was placed on the ballot that year by Governor Mario Cuomo and the New York State Legislature. Dinkins defeated Giuliani handily in Manhattan, Brooklyn, and the Bronx, but Giuliani's margin in the other two boroughs was large enough to win the election. Giuliani won by a margin of 53,367 votes. He became the first Republican elected Mayor of New York City since John Lindsay in 1965. Rudy Giuliani – Republican Party (WON)<br> David Dinkins (incumbent) – Democratic Party<br> George J. Marlin – Conservative Party 1993 New York