Steve Forbes: Trump will lure votes from Democrats
© Greg Nash

Publishing magnate Steve Forbes weighed in on the Republican presidential race Saturday and said that Trump would do well with unions, even if union leaders pull for a Democratic candidate.

“[Union leaders] may endorse a Democrat like Hillary ClintonHillary Rodham ClintonAgriculture head backs Perez in DNC race Hillary Clinton tweets well-wishes to Bushes Chelsea Clinton: We must keep fighting MORE, but the rank and file, a big chunk of them are going to go their own way," Forbes said on a radio interview with John Catsimatidis. 

He also said a big part of Trump's appeal is his attitude in speeches. 

"Trump, even as he criticizes and throws out charges and all that kind of thing, he always ends up on an upbeat note about the USA," Forbes said.

"People want that, people want to hear that. They're tired of all this gloom and doom, and 'the U.S. is going in a trash heap.'"

When asked for his opinion on the rest of the GOP field, the Forbes Magazine founder added that Marco RubioMarco RubioTop Dem: Don’t bring Tillerson floor vote if he doesn’t pass committee Booker to vote against Tillerson Rubio wades into Trump-Lewis feud MORE and Ted CruzTed CruzCaitlyn Jenner to attend Trump inauguration: report Trump’s UN pick threads needle on Russia, NATO Haley slams United Nations, echoing Trump MORE should seek to imitate Trump's rhetoric.

"Well Ted Cruz has got to get a, I think, more upbeat note. He's got some good ideas on gold, he's got some good ideas on taxes, but he's got to be a little more Reagan-esque in his speeches," he said.

"Rubio is trying to do that, he's getting better at it. I just wish he'd make his tax plan better, he's got the worst tax plan out there," Forbes added. "Better than what we have now, but not up to par with the other Republican candidates."