of times and a lot of times positions that sounded like he was a democratic candidate and opened up to a lot of criticism. clearly, this has to be part of donald trump s calculations to stick closer to the script and be a more polished candidate. we ll see, though, if he s able to stick to that in the coming weeks. jeff, let s take a closer look at the nbc news wall street journal poll, trump, dr. ben core son ne carson neck and neck. trump is down, senator rubio and carly fiorina are up. fiorina seeing the largest jump. what do these candidates need to do now to continue building that kind of momentum? wolf, not all candidates are building momentum, actually. jeb bush to start with, look at him in the poll has take an slide since the last survey. let s talk about the ones that are. marco rubio is emerging as a compromised conservative