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PILESGROVE, N.J. (CBSMiami/AP) — Bernie Sanders may be good for the campground business.

Campgrounds outside Philadelphia are getting booked up by Sanders supporters planning to protest during this month’s Democratic National Convention.

Thirty miles south of the city, all 200 short-term camp sites at the Four Seasons in Pilesgrove, New Jersey, have been booked during the week of the DNC.

Campground owner Cheryl Robinson says the vast majority have been booked by Sanders backers.

She says that the Four Seasons has only been booked up during major holidays and when Pope Francis visited Philadelphia last year.

Tens of thousands of Sanders supporters are expecting to take part in rallies and demonstrations while the Democrats are in Philadelphia from July 25th to the 28th.

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