In Westchester, an early test for Cuomo’s gun control bill – When Governor Andrew Cuomo pushed through a package of stricter state gun laws earlier this year, after an elementary school shooting in Newtown, Connecticut, his widespread, bi-partisan popularity began to fracture along more predictable party lines.  Cuomo has defended the move, and his poll numbers still make him among the most popular Democrats in the country as he prepares to run for re-election next year.  But the gun bill could have pronounced effects down the ballot. Democrats are already making it an issue in Westchester County, where Rob Astorino, the incumbent Republican county executive who opposes Cuomo’s gun control law, is seeking re-election in November.