A former GOP speechwriter is considering voting for a Democratic candidate in the general election over Republican presidential front-runner Donald TrumpDonald John TrumpIvanka Trump pens op-ed on kindergartners learning tech Bharara, Yates tamp down expectations Mueller will bring criminal charges Overnight Cybersecurity: Equifax security employee left after breach | Lawmakers float bill to reform warrantless surveillance | Intel leaders keeping collusion probe open MORE.

Ben Stein, a conservative economist, said he's never voted for a Democrat before — adding that he'd like to see a Republican in office — but called the front-runner "dangerously misinformed" and said he would "sink" the party.

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"I like him, but he’s dangerously misinformed," he said on CNN on Wednesday.

Stein said he went to law school with Democratic presidential candidate Hillary ClintonHillary Diane Rodham ClintonChris Murphy’s profile rises with gun tragedies DNC, RNC step up cyber protections Gun proposal picks up GOP support MORE, adding he's always had a "kind of fondness for her."

“She was always a very nice young woman,” Stein said.

He also said he admired her rival Bernie SandersBernard (Bernie) SandersChris Murphy’s profile rises with gun tragedies Clip shows Larry David and Bernie Sanders reacting after discovering they're related For now, Trump dossier creates more questions than answers MORE's single-payer national health plan.

“When I worked for Mr. Nixon as a speechwriter, I wrote the message that sent up Mr. Nixon’s proposal for single-payer health plan,” he said.

Stein said he liked Ted CruzRafael (Ted) Edward CruzWhatever you think the Alabama special election means, you’re probably wrong This week: Congress gets ball rolling on tax reform Week ahead: Senators work toward deal to fix ObamaCare markets MORE and "loved" Marco RubioMarco Antonio RubioOvernight Defense: Tillerson, Trump deny report of rift | Tillerson says he never considered resigning | Trump expresses 'total confidence' in secretary | Rubio asks Army to kick out West Point grad Rubio asks Army to kick out West Point grad with pro-communist posts GOP establishment doubts Bannon’s primary powers MORE. But he added Rubio is "hanging an albatross around Mr. Trump's neck that doesn't deserve to be there," referring to criticism over David Duke and The Ku Klux Klan.

“Mr. Trump definitely did disavow the Ku Klux Klan and to say otherwise is simply not true,” Stein said.

"If I could just snap my fingers and have anyone it would be Marco Rubio," he said. "But I think he's been a little bit disingenuous lately."

He also called New Jersey Gov. Chris Christie a very capable governor but said he made a poor decision in his endorsement of Trump.

"I think he made a mistake getting on the Trump bandwagon, and I just hope that bandwagon does not drag the whole party out to sea and sink us," Stein said. 

"I'm afraid that's what's coming down the road."