A Florida man was sentenced to 15 months in prison on Friday for threatening to behead U.S. Senator and Democratic presidential hopeful Bernie Sanders, federal prosecutors said.

The man, 58-year-old Robert Pratersch of Kissimmee, in September 2018 left three voicemail messages at Sanders' Vermont office where he made anti-Semitic threats and threatened to kill Sanders by beheading him in an "ISIS-style" video.

Sanders traveled this week to Mitch McConnell’s home state to brand the Senate Republican leader as an obstructionist for blocking Democratic efforts to reduce gun violence, bolster election security and raise the federal minimum wage.

Sanders used a rally in Louisville, Kentucky, on Sunday to challenge McConnell to “have the guts” to debate those bills.

Sanders also made a pitch for his version of the Green New Deal while speaking in coal-producing Kentucky.

In lashing out at McConnell, the Vermont senator took aim at the second biggest target for national Democrats, behind President Donald Trump.

McConnell has attached himself to Trump in positioning himself for his 2020 reelection bid. The longtime senator has vowed to bury the House Democrats’ agenda.