Pop singer Katy Perry sure is all in for Barack Obama.

At a campaign rally for the President in Las Vegas Wednesday, the dazzling diva wore an Obama-Biden ballot dress (video follows with commentary).

Perry performed her first number in what looked like a royal blue business suit, tie and all.

At its conclusion, stage hands took that off revealing the following:

These stars sure do love their president, don't they?

Photos courtesy Getty Images.