John Kasich visited Stephen Colbert, to talk about his effort to create some positive spirit and vision in the presidential campaign “People are getting tired of the negative,” he began. “You know in New Hampshire, I took a pounding—”

Stephen interrupted: “Shut up!”

While hosting his show on a special trip to Los Angeles, Jimmy Fallon welcomed a special guest to sub in for him on the monologue: Jay Leno. “Let me ask you something: What is going on with the Republicans?” Jay asked. “I watch these debates — Trump attacks Cruz; Rubio goes after Bush; Bush gets into a fight with Trump. Remember the good old days, when the Republicans were all united against the poor and the minorities — what happened there?”

James Corden looked at the latest antics from Jeb Bush, in his quest to somehow become likable: Tweeting a photo of a gun with his name on it, and switching to contact lenses. “Most people actually do look cooler without glasses — Jeb looks like a turtle who’s lost his shell!” James said. “Also, is anyone else worried that Jeb got rid of his glasses the same week that he got a gun?!”