On June 8, 2009, began the 2009 New York State Senate leadership crisis.

Roy J. McDonald changed from the Assembly to the Senate at the beginning of this legislature.

Assemblyman Jose Peralta was elected to fill a vacancy in the Senate.

Note: For brevity, the chairmanships omit the words "...the Committee on (the)..." The asterisk (*) denotes members of the previous Legislature who continued in office as members of this Legislature.

Note: For brevity, the chairmanships omit the words "...the Committee on (the)..."