Can Obama Keep Democrats Together on Iran?

First Read: “President Obama faces several obstacles before actually achieving his historic nuclear deal with Iran. There’s a Republican Party willing to fight him every step of the way. There’s an Israeli prime minister vowing to kill it. And there’s the fact that the U.S. and Iran still have to finalize key issues like the timing of sanctions relief. But the first test for Obama is making sure that his own party doesn’t scuttle the deal — by providing enough votes to override a presidential veto on bipartisan legislation scrutinizing the deal.”

“With just a few exceptions (like trying to make Larry Summers Fed chair), Obama has maintained discipline over his party — due in large part to the work of Harry Reid in the Senate and Nancy Pelosi in the House. Can he do so again?”