>> i'm very glad donald trump is in this election. >> that is a little bit of a romance. i like him. >> reporter: their bromance beginning to wane after audio from a private fund-raiser captured cruz questioning trump's judgment. >> i tell you what, my judgment's great. i built a multi, multi, multibillion dollar company. some of the greatest assets in the world. i have good judgment. i have great judgment. i would say i have far better judgment than ted. >> reporter: trump later tweeting i was disappointed that ted cruz would speak behind my back, get caught and then deny it. after trump said this about cruz's temperament -- >> look at the way he's dealt with the senate where he goes in there like a -- frankly, like a little bit of a maniac, you're going to get things done that way. >> reporter: cruz tweeting in honor of my friend donald trump with a link to "flashdance's" popular song "maniac." ♪ she's a maniac maniac i sure know ♪ >> reporter: carson, once trump's nearest rival, now dropping in the polls. >> poll numbers go up and down.