Unfortunately, I can only vote for one contestant at this point in the competition!
I believe Bo and Carrie both have a career in the music industry already sewn up, so I'll vote Carrie. She's more pop idol material (it pertains to image, as well), and Bo is more a rocker.
You can vote for two if you want to...IMO, if Bo and Carrie are the final 2, I'm happy with whomever is the "IDOL". I'll vote for Bo and Carrie tonight.