I think maybe it's because Kiba's team has yet to have any major spotlight. Naruto's has gotten a lot of coverage because they're our main characters and all, and Lee accumulated a lot of fans as well, during his fight (Neji too I guess ^ˆ^; ). But both Hinata and Kiba lost their matches, and Shino ... well, he's a quiet guy and his fight(s) didn't last very long either. Plus we've gotten little to no background history on those three. I agree that they're a pretty cool team—the characters are all really fun and interesting—but people are much more likely to go for the main team with Naruto and Sasuke (poor neglected Sakura&#33 or vote for Lee or Neji's teams because those guys are awesome.

By the way, the team I voted for (InoShikaCho) isn't doing so well in the poll either ^ˆ^; Ah, the troubles of liking secondary characters ...