Katy Perry Shows Her Support for Barack Obama In The Form Of A Latex Ballot Dress. It’s no secret who Katy Perry is voting for, a few weeks ago she showed off Obama inspired nail art, and this week she’s showing off her support in the form of a dress. She showed up to a Wednesday night POTUS rally wearing an all white dress with both presidential candidates names listed much like a ballot. On the dress, she clearly checked off the box for Barack Obama. See Katy Perry’s fun way in which she gave the President her support below.