weight loss. >> reporter: we don't have blood pressure or anything. you're right. but it's strength and stamina. >> katy tur in las vegas, appreciate that. i want to go to political correspondent steve kornacki joining us and trump received, steve, a lot of blowback on the comments of ted cruz and what are you hearing? >> her's a new development worth keeping an eye on just in the last hour. someone who's been one of trump's most influential allies as he's risen to the top of the polls, may now be turning on him because of his attacks on ted cruz and talking about the radio host rush limbaugh. rush limbaugh's show is going on as we speak. he made some comments just a few minutes ago about donald trump and working to turn the audio around on that and i can fill you in on the basics of what he said. basically limbaugh listened to trump about cruz over the weekend and very upset with it. he said what trump said in saying that cruz didn't know how