It opened early :O
Vote once a day!

Voting Period: November 9 – December 17 at 17:00
Results posted on December 21.

The characters in the top 5 votes will debut in a “dream unit CD”. There will also be official Twitter icons made from the top characters.
Furthermore, from December 14 onwards, number of votes on each character as well as rankings/top 5 will not be shown. (Smells a little rigged, but hey the trolls rig too :P)