For four years, a cycle of victories by progressive-minded Democrats has pushed the New York State Legislature to the left, carrying their party to legislative supermajorities and creating an unfettered path for liberal priorities to be enacted around housing, climate change and abortion rights. But this year, a national Republican wave is threatening to curb those progressive gains and vanquish the Democrats’ veto-proof supermajority, as Republicans seek to expand their diminished foothold in the State Capitol. While the Assembly is solidly in Democratic control, Republicans seem well positioned to make inroads in the State Senate, where competitive races are playing...