Definitely a possibility. By the end of the season the West should have at least two teams in the top 25, the question is who will they be? I can understand not having anyone but Wisconsin in there now, but I'd be really shocked if only the division champ is ranked at the end of the year.
Yeah, Wisconsin is the safe pick. The Badgers have been most consistently at or near the top of the West the longest.
But I tend to think the West is fairly wide open -- Wisconsin, Iowa, Minnesota, Purdue and
maybe Nebraska in the mix. I wouldn't doubt, as you say, there will be at least two ranked teams from the West division.