in moments, we'll be joined by pollster ed gauze and david wahl and talk about this possibility. but first, we go to trace gallagher. >> reporter: when donald trump arrived at his surprise meeting yesterday with reince prix dis, the rnc had already unveiled its new convention facts website that lays out the party's rules for nominating a candidate, including the rules for a contested convention where a candidate does not reach the magic number of 1237. sources say during the meeting, priebus explained that each campaign needs to be prepared to fight for delegates. sources also say that donald trump was not happy with the way his team had performed on that front. the trump camp denies that. but many experts believe if donald trump does not get 1237 delegates and does not win on the first ballot at the convention, as many as 100 of his delegates will abandon ship. remember, most delegates are only bound to a candidate on the first vote. after that, they become free agents and the cruz and kasich campaigns have apparently made in roads when it comes to stealing them. then there are