Where they say things stand now in New York:

[T]he make-up of the Senate has shifted since 2009: five senators who voted no then [on SSM] have been replaced by legislators committed to vote yes, while three yes votes have been replaced with nays. The result: advocates have 26 of the 32 votes required for passage. (Times Union)

SSM was defeated in the NY Senate 38-24 in 2009.