Republicans yesterday won the gubernatorial races in Kentucky and Mississippi. In Kentucky Congressman Ernie Fletcher became the first Republican to win the state in 32 years. In Mississippi Haley Barbour, the powerful Washington lobbyist and former head of the Republican National Committee, beat the Democrat incumbent. Republicans now control all of the governorships in the Deep South. Voters in Philadelphia re-elected Jon Street as mayor. In New York, a move backed by Mayor Michael Bloomberg to end partisan primaries in city races was rejected.