Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.) on Monday vowed to be the "Grim Reaper" for progressive policies if Republicans hold on to the Senate in 2020.

"If I'm still the majority leader in the Senate think of me as the Grim Reaper. None of that stuff is going to pass," McConnell said while speaking to community leaders in Owensboro, Ky.

"I guarantee you that if I'm the last man standing and I'm still the majority leader, it ain't happening. I can promise you," McConnell added.

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His comments come as Republicans have seized on proposals like the Green New Deal and "Medicare for All" to paint Democrats as shifting to the left and embracing "socialism" as the next election nears.

"Now, my friends, we're having a legitimate debate about the virtues of socialism. And I don't want you to think this is just a 28-year-old congresswoman from New York. This is much broader than that," McConnell said.

Ocasio-Cortez is the driver behind the Green New Deal, a sweeping environmental proposal which McConnell brought to the Senate floor last month in what he later acknowledged was a "show vote."

On Monday, McConnell pointed to the large share of Democrats voting "present" on the Green New Deal as proof that socialism is "a pervasive policy view on the other side."

"I don't want you to think this is just a couple of nut cases running around here on the fringe," McConnell said.

McConnell told reporters earlier this month that the country needs a "referendum on socialism," tipping his hand to his 2020 strategy.

"Are we going to turn this into a socialist country? Don't assume it cannot happen," he added on Monday. "It will all be in the hands, I think, of the voters of this country next year."