and acts like a front-runner. not just the crowds, but he's changed as a candidate, i think. he's gotten better at this. and so people who want to dismiss this whole thing -- >> it can't to be done. >> mark halperin in salt lake city you've been covering campaigns, you've never seen anything like this. what do you hear out on the campaign trail? what's causing this? >> reporter: both those guys as gene just suggested got better as candidates whereas people they are competing against largely haven't. so remarkable in so many ways, bernie sanders socialist from brooklyn, vermont goes to liberty university and is confident and expressing his heart his vision for america. donald trump a billionaire from queens, from manhattan, goes to dallas. not only draws that big crowd