Janssen explained that the end of primary season is at hand and Trump's power comes from his ability to mobilize his base in Republican primary elections. And that could open up a space for more Republicans to jump ship on a war powers resolution, for example," she added. On the flip side, he continued, Trump doesn't have the control over GOP legislators the way he once did. "I really wonder whether Trump in his head doesn’t understand that the midterm electorate is a different thing than the Republican primary electorate." Where that comes into play is whether, after primary elections have finished, Republicans are going to be more willing to stand up against Trump's unpopular war in Iran.