On the Sunday broadcast of “The Cats Roundtable” on New York City’s AM 970, host John Catsimatidis spoke about the GOP presidential nominee race with former Democratic National Committee chairman Ed Rendell.

Rendell first hit on GOP front-runner Donald Trump, saying he is “for real,” although he did clarify that he did not think Trump would wind up getting the GOP nomination.

“Donald Trump is for real,” Rendell said. “For the first time I believe there’s a legitimate path for Donald Trump to be the nominee.”

The former Pennsylvania governor then added Gov. John Kasich (R-OH) and Sen. Marco Rubio (R-FL.) is the ticket that he would “fear the most.”

“In terms of who we fear the most, on the Democratic side, just speaking for myself, I would fear John Kasich and Marco Rubio as vice president. That would be the ticket I would fear the most,“ he continued. “I would also fear Rubio to an extent, but Rubio runs into trouble, because the Republicans have argued for eight years that Barack Obama wasn’t ready to be president, because he had only been a U.S. senator for a short time, less than three years, and he had no previous executive experience, and that sort of fits the bill for Marco Rubio as well.”