Katy Perry: Voting Ballot Dress at Obama Rally!

Katy Perry lets the world know who she is voting for on her voting ballot dress at a campaign rally for Barack Obama on Wednesday (October 24) at Doolittle Park in Las Vegas, Nev.

The singer, who celebrates her 28th birthday TODAY (October 25), performed for the crowd before Obama took the stage to energize the thousands of supporters.

Katy previously performed at an event for Obama earlier this month at the 30 Days to Victory Concert in Los Angeles.

Also pictured inside: Katy rehearsing for her performance at the rally earlier in the day.

WHAT DO YOU THINK of Katy Perry’s voting ballot dress – YAY or NAY?

25+ pictures inside of Katy Perry performing at the rally in Las Vegas…