define herself? and beto o'rourke, from day one i said this guy has been overrated in this presidential race. is this kind of the final end? >> and that's going to be another matchup, with beto o'rourke possibly. donald trump, of course, will be part of the debate tonight? >> he'll insert himself. >> he's trying to insert himself in the conversation, maybe you could argue that already today. he was asked this morning who he thinks his biggest opponent is in the democratic field right now and here's what he said. >> i think right now it will be sleepy joe, i think. i feel he'll limp across the line. that's what i think. so what i think doesn't mean anything, but i know the other people, i know him. i think he's off his game by a lot. but i think, personally, i think it's going to be sleepy joe. >> the attempt at branding aside, polling still says that