Bernie Sanders’ supporters are not going away quietly.

Dake Kang of the Associated Press is reporting that campgrounds around the city of Philadelphia are being bought out by Bernie’s backers. These people are set to protest at the Democratic National Convention later this month.

In Pilesgrove, New Jersey there are 200 campsites situated about thirty miles south of the city. They’ve all been booked for the week of the convention, July 25th to 28th.

“We are getting phone calls constantly,” Four Seasons owner Cheryl Robinson told Kang. “A lot of times they don’t want to let us know that they’re Bernie supporters. We ask if they’re coming for Occupy the DNC, and then they kind of giggle and embarrassedly say, ‘Yes, we are.’”

Occupy the DNC refers to a Facebook group that has over 30,000 members.

“Our goal is to show up in mass numbers to swing super delegates to Bernie,” the group’s leader writes in the group’s description. “This is a collaborative page with all of us working together toward ride and house shares, event planning etc. Please join to help our revolution.”

Bernie Sanders himself is still set to hold a rally in FDR Park the Sunday before the convention starts and while he has said he’ll vote for Clinton in November he has yet to drop out of the race.