Bub and Bob and General RAAM didn't beat most of their opponents by very much in the previous contests. 4chan probably kicks into gear again if it gets close.
I doubt the characters who had that initial 4chan support and have lost their leads despite that are going to get them back, though. Which probably leaves just those two matches and Wakka/Lucca as still in contention. Maybe Moogle can pull a comeback if the night votes are kind to him, he doesn't seem to be dying off as quickly as the others. And I guess we should never count Frog out. >_>