Perry had sang Al Green's "Let's Stay Together," and her recent hits "Part of Me," "Teenage Dream," "Wide Awake" and "Firework" for her 30-minute performance.
The “I Kissed a Girl” singer has been performing at concerts for free at the re-election rallies of President Barack Obama.
Perry was wearing a pair of skintight rubber mini dresses on the campaign trail. One of the dresses was emblazoned with Obama's "Forward" campaign slogan, while the other one was with "ballot" on the stump.
Katy Perry performed last month at a rally in Las Vegas in her alternative road white. All the formfitting dresses were made by a Los Angeles-based designer, Abigail Greydanus.
Bruce Springsteen also appeared performing at Obama rallies on Monday. He was clad in jeans and a dark shirt, tie and suit vest. Mitt Romney’s election rallies were rocked by Kid Rock.
