Democratic presidential candidate Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE took a swipe at Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE (R-Ky.) while campaigning in his home state of Kentucky.

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Sanders said that with high enough voter turnout, Democrats could maintain the White House while also taking back the majority in the Senate.

“Mitch McConnell will not be the majority leader," he said at a rally on Saturday in Bowling Green, Ky. "Maybe then we can do something for the retired coal miners for protecting their pensions."

A few minutes later, the Vermont senator called out McConnell again when bashing the Citizens United court decision, which allowed corporations and unions to donate unlimited amounts of money to super-PACs.

"While I’m in Kentucky, the state of Sen. McConnell, let me also say this: I think that Citizens United Supreme Court decision was one of the worst decisions in the history of the United States Supreme Court," he said. "Sen. McConnell thinks that Citizens United did not go far enough. His vision of democracy is not just that billionaires and corporations can put money into super-PACs; he wants those individuals to be able to directly fund a candidate."

Sanders likened that proposal to NASCAR driver sponsorships, saying, "If Mitch McConnell has his way, we're going to have United States senators: 'Hey, I'm proud I’m sponsored by Exxon Mobile; I’m sponsored by the pharmaceutical industry; Hey, look at me, I'm sponsored by Wall Street."

Kentucky holds its Democratic primary on Tuesday.