Bernie Sanders' next signature rally may take place in Philadelphia—the night before the Democratic National Convention.

The Vermont senator's campaign has applied for a permit to hold an event that will reportedly host between 15,000 to 40,000 people on July 24 at Franklin Delano Roosevelt Park. It is one of 10 such pro-Sanders events requesting permission from the Philadelphia mayor's office, the Burlington Free Press reports.

Sanders spokesperson Michael Briggs said last month that the senator was planning to deliver a "victory statement" in Philadelphia, but said on Wednesday that plans for the rally are still being finalized.

The campaign is gearing up for the convention, where Sanders has promised to bring a floor fight over the Democratic National Committee (DNC) platform after a slew of his proposals—including banning fracking and blocking U.S. Congress from voting on the Trans Pacific Partnership (TPP)—were overruled or watered down during previous negotiations.

Also scheduled for July 24 is a March for a Clean Energy Revolution calling for a ban on fracking and a just transition to a renewable energy era.

"It is imperative that this platform be not only the most progressive in the history of the Democratic Party, but includes a set of policies that will be fought for and implemented by Democratic elected officials," Sanders said last week.

The convention will take place July 25-28.