reporter: cruz also has a history of making jarring remarks. once saying that accepteding obamacare was akin to apiecing the nazis during world war ii. we saw in britain, chamberlain who told the british people accept the nazis and in america there were troyse voices that listened to that. reporter: and taking a flip approach to a question about contracepti contraception. last i checked we don t have a rubber shortage in america. reporter: neither of these candidates are strangers to sparring with their republican establishment. but tonight at a campaign event in las vegas it was clear that donald trump had no interest in sparring with ted cruz. he pointed out he s far ahead in nationwide polls. he called ted cruz a good guy. sara murray, cnn, las vegas, nevada. let s head back to isha in los angeles. one thing about this debate coming up, interesting to see if that bromance which has been going on between donald trump