Republican mayoral nominee Curtis Sliwa has cut a new ad featuring a prominent conservative city Democratic lawmaker who is breaking party lines to back his candidacy. “I’m a Democrat – but I’m fed up,” Queens Councilman Robert Holden says in the campaign spot — while decrying “corruption” and “scandals” as ex-Gov. Andrew Cuomo’s image appears across the screen. Cuomo — a Dem who resigned as governor under the threat of impeachment over sexual-misconduct accusations he denies — is running for New York City mayor on an independent “Fight and Deliver” ballot line after losing the Democratic primary to socialist Zohran Mamdani.