“If Sen. Michael Bennet filibusters or votes for the Iran deal we will make sure voters know he supported a nuclear deal that threatens our national security,” Andrea Bozek, a spokeswoman for the National Republican Senatorial Committee, said in a statement.

Bennet has so far declined to state a position on the deal.

Still, Democrats are waving off any concerns about political retribution. Republicans — who made a habit of subjecting legislation to 60-vote thresholds while in the minority — are the ones looking like hypocrites, they insist.

“I think observers of the process will agree that this is just a little bit too cute coming from a party that forced cloture motions countless times over the past seven years,” said one senior Democratic Senate aide.