There is a real question about momentum. If you were Bernie Sanders at Super Tuesday was a disappointment. Yes -- you won California the largest prize, but you didn't win it in that big, overwhelming way that you were hoping to. You need a good night to be able to prove to Democrats that you are still in the mix here, that you still have some of that same energy and enthusiasm from your 2016 campaign. If he doesn't win multiple states, probably tonight, those questions get a lot more challenging for him, especially as we look ahead to March 17th, the next round of big primaries where you have several states, most notably Florida, that are not lining up particularly well for Bernie Sanders."