and that is the underlying question in this entire campaign. which republican is best positioned to beat hillary clinton or whichever democrat happens to win the nomination? that's what worries some republican leaders in the party establishment, is donald trump strong enough to take on hillary clinton in the general election? it's one of the questions that may be answered at the debate on tuesday night. >> jeff zeleny, cnn, las vegas. throughout this gop primary there has been a lot of talk about a civil war within the republican party. the insiders versus the outsiders. donald trump versus pretty much everybody else. well, for more on that, anna who is a supporter of jeb bush and a friend of marco rubio. thank you for being with us. and jeffrey who i think it's fair to say is a donald trump supporter. let's talk about the civil war, will we see that play out tomorrow night? >> i think there are different factions in the republican party and there is a very wide spectrum of diversity of thought on a number of issues, whether it's national security, whether