Republican presidential front-runner Donald Trump Donald John TrumpREAD: Cohen testimony alleges Trump knew Stone talked with WikiLeaks about DNC emails Trump urges North Korea to denuclearize ahead of summit Venezuela's Maduro says he fears 'bad' people around Trump MORE could "feel the Bern" on Thursday night.

Trump, who is making an appearance in Vermont, the home state of Democratic presidential candidate Bernie Sanders Bernard (Bernie) SandersSenate Dems seek to turn tables on GOP in climate change fight Bernie Sanders Town Hall finishes third in cable news race, draws 1.4 million viewers Woman to undecided Biden: 'Just say yes' to 2020 bid MORE, could have some empty seats in the house, thanks to the senator's supporters.

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They have taken to Facebook to urge other Sanders backers to sell out the venue in Burlington on Thursday night by reserving tickets and not showing up.

“No, I have not converted to a racist bigot,” one Sanders supporter wrote. "I am just assuring that there are going to be two empty seats.”

The supporter then directed hundreds of other Facebook users to an Eventbrite URL to reserve tickets.

“Please share and spread the word so Trump gets the message that here in Vermont, we only #feel the bern.”

Burlington police officials have raised concerns of overcrowding at the rally because Trump's campaign has offered up 20,000 free tickets to the event, according to The Burlington Free Press. But officials say the theater where the event will be held has a 1,400-person capacity.

Trump took to Twitter to alert supporters that they should get there early since admittance is first come, first served.