democratic primary 2008

I'm sort of adrift and looking for a candidate to support, and so am now researching Biden. Statements of his positives are easy to come by, of course, but what do you other primary-voting Democrats see as his negatives? Thanks!

From the AP: Of course, Michigan Dems continue to hope that they'll be rewarded for their insolence: I hope the national Dems resist the pressure to seat the Michigan delegates, elections are long enough as it is without this latest idiocy the states are engaging in by pushing the...