This is cool.
Vice President Biden will be in Wilmington rallying for the statewide Democratic candidates. See here for more details and to RSVP.
Gates open at 3:45, expect airport-like security, and you are probably best off just bringing your cell phone or camera and leaving everything else. H. Fletcher Brown Park is at Market St and South Park Drive, right in front of the old Hercules Building at the Brandywine River.