DENVER (AP) — Former U.S. Sen. Gary Hart regrets having disparaged Cory Gardner in his endorsement of Mark Udall, and is saying so publicly.

In a letter to the editor published in The Denver Post Friday, Hart says he endorsed Udall in last November’s election because he believes his fellow Democrat had performed well for Colorado. Hart says he still thinks Udall should have been re-elected, but is sorry for going after Gardner in a way he says contributed to bitterness and partisanship in government.Gary Hart (former US Senator)

In a 2014 letter in which he said he was dumbfounded by the Post’s endorsement of Gardner, Hart had said the man who is now the state’s junior senator was far from the standards of statesmanship Hart had seen in serious lawmakers of both parties.

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