That's the point. The contest isn't going to be close. When was the last time we didn't know the candidate going into the convention? I'll give you a hint- it was around the time of the McGovern-Fraser Commission. Clinton has massive leads in Massachusetts, New York, California and New Jersey. In fact, in the five states with the most delegates, Obama has a lead in one- his home state of Illinois. As it stands right now, the contest won't be close, and the Florida delegates may be seated with no great uproar.
Edit: These polls aren't great, but there ya go.