bush telling dana bash the race is a triathlon, not a sprint. >> look, the fact is we've got a plan, we're executing on the plan. i'm convinced i'm going to win the republican nomination. i'm going to do it in a way that will actually make it possible to win the general election as well. >> now, the bush campaign just released those medical records, also his tax filings. and a top list of fundraisers a few minutes ago. we're going through those documents, but i can tell you bush's doctor reports he is healthy and like a lot of americans he's taking a cholesterol lowering drug known as statins. one more bit of news, trump and carson are now threatening to bow out of the next debate on cnbc at the end of the month unless certain demands are met. both candidates want guarantees the debate won't last more than two hours. and that they'll be able to deliver opening statements and closing statements. wolf. >> athena, thanks very much. let's get some more from our political kmcommentators, s.e.cupp, ana navarro, a friend