Sen. Tom Cotton Tom Bryant CottonThe Hill's 12:30 Report: Trump stokes fears over November election outcome The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Abortion stirs GOP tensions in Supreme Court fight MORE (R-Ark.) said the Democratic presidential primary contenders have “lost their mind” with a slate of progressive policies.

“We are going into a highly consequential election. The Democrats have truly lost their mind,” Cotton said on John Catsimatidis’s radio show Sunday.

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Cotton was responding to the presidential primary debates on Tuesday and Wednesday, in which the contenders discussed policies that included implementing health care systems that would eliminate private coverage, abolishing the death penalty and decriminalizing unauthorized border crossings.

“This is truly … an election about whether America will be a socialist nation. I don’t think Americans want to be a socialist nation. But it will be incumbent upon all Americans to get out and make their voices heard in this election,” Cotton said.

Republicans have gotten to work labeling Democrats in the White House race and House and Senate contests across the country as socialists, banking that the moniker will turn off independent voters.

"I'm not buying the storyline of progressive versus moderate," Sen. John Kennedy John Neely KennedyMORE (R-La.) said during an interview on Fox News this week, weighing the dynamics of the Tuesday night debate in Detroit.

"I would remind you that the lesser of two socialists is still a socialist," he added. "Even from the less liberal candidates, I heard a job-killing, soul-crushing socialist agenda."