An ex-NYPD lieutenant who supported Republicans for years has changed his tune and is now singing the praises of Mayor Zohran Mamdani as he seeks a lefty state assembly seat. Shamsul Haque is hopping onto the Mamdani bandwagon — showering the Democratic Socialist New York City mayor with praise — even though he and his Bangladeshi political group previously vehemently attacked such woke politicians and supported GOPers for years. “My group will vote Republican this November,” Haque’s