An upstate DA and former Bronx prosecutor got post-election religion yesterday, admitting he was a 1970s porn star after vehemently denying it before he won re-election last week in Cortland County.

Democrat Mark Suben ’fessed up after a Syracuse-area TV station posted a story about a YouTube video with pictures of a porn actor who looks suspiciously like him.

He co-starred as “Gus Thomas” with porn legends Linda Lovelace and Harry Reems in the sequel to “Deep Throat.”