The 2010 New York State Senate elections were held on November 2, 2010, to elect representatives from all 62 State Senate districts in the U.S. state of New York. Primary elections were held on September 14, 2010. Republicans retook the Senate majority, winning 32 seats to the Democrats' 30 on Election Day.
One Republican Senate incumbent, Senator Frank Padavan of Queens, was defeated, while four Democratic incumbents (Sens. Brian Foley, Antoine Thompson, Darrel Aubertine, and Craig Johnson) were defeated in the general election. Democratic candidate David Carlucci was elected to an open seat in Senate District 38 that had become vacant due to the July 2010 death of Republican Senator Thomas Morahan. Incumbent Democrat William Stachowski was defeated by Timothy M. Kennedy in a Democratic primary in Senate District 58, and Kennedy prevailed in the general election. The Republicans' takeover of control of the State Senate was not confirmed until Johnson, who had sought a full hand recount of his race, exhausted his final court appeal on December 20, 2010.