New York Republicans are eying a big red target. GOP Rep. Elise Stefanik pounced all over Gov. Kathy Hochul’s support of Big Apple mayor-elect Zohran Mamdani as conservatives warned the Democratic leader’s ties to the avowed socialist could sink her re-election hopes. The upstate Republican congresswoman ratcheted up attacks on Hochul just hours after Mamdani was elected the next mayor Tuesday — catching the attention of some moderate Democrats who fear Hochul’s embrace of Mamdani could damage