It’s going to be pretty hard for opponents of the Iran Nuclear Deal to claim any momentum from the Schumer defection to their ranks any longer. Today three more previously undecided Democratic senators, Corey Booker, Mark Warner and Heidi Heitkampf, came out in the support of the deal, bringing the number of “nay” votes on the resolution of disapproval to 37. Whoever gets a majority of the seven remaining Democratic undecideds will prevail on a cloture vote against a presumed filibuster.

It’s already settled, of course, that Democrats have the 34 votes needed to stop a veto override. So it’s increasingly obvious the only way opponents can kill the deal is for a Republican to win the 2016 presidential election and then resist the intense backstage begging from their own party’s graybeards not to begin a new administration by making the United States an international laughing stock.

Ed Kilgore

Ed Kilgore is a political columnist for New York and managing editor at the Democratic Strategist website. He was a contributing writer at the Washington Monthly from January 2012 until November 2015, and was the principal contributor to the Political Animal blog.