that. >> and both parties this, is enormous pressure to conform. donald trump has changed a lot of positions. h marco rubio has changed his big position. on the tpp moving away from where she had been, it's a kind of a bipartisan problem at this point. >> guys, stand by. cnn has partnered with a political prediction market to see if the odds for winning the democratic nomination change during tonight's democratic presidential debate. right now hillary clinton is the odds-on favorite to win the nomination even though she's up to 2% since last week. joe biden's odds have dropped 4% in the last week. we'll see if there is a dramatic change in the newspapers ofup i after tonight. go to cnn.com/predict. there is much more ahead as we count down to the cnn