trump's favorables are up 16 points since the beginning of the month. jeb bush is down 6 points. maybe trump has gotten bored with jeb bush, but the one candidate who might be making trump sweat, ben carson. he's got a 51% net approval rating among republicans. highest of all the candidates. and it sounds like trump's waiting to pounce. >> what do you want republican voters to know about ben carson and why you would be a better president than he? >> well, i'm much better as a counterpunching, so i'd rather have -- and i'm hoping for ben to really hit me at some point because i love to counterpunch. he's been very nice to me. he's actually a really nice guy. i like him. we get along very well, as i do with most of the other people up on stage. and it's interesting, but i think i'm probably going to wait. i do have certain things to say, but i'm not going to be saying