A nationally known sheriff resigned from presidential hopeful Mitt Romney’s Arizona committee and acknowledged he is gay amid allegations of misconduct made by a man with whom he previously had a relationship.

But Pinal County Sheriff Paul Babeu vowed Saturday to continue his bid for the GOP nomination in Arizona’s rural 4th Congressional District race.

He denied claims he tried to threaten the man, a Mexican immigrant and a former campaign volunteer, with deportation if their past relationship was made public. The man’s allegations were first published Friday in the Phoenix New Times, an alternative weekly magazine.

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