Currently the pledged-delegate counts (i.e. not the superdelegates) are around 1100 to 1000, with Obama in the lead. The number required to become the Democratic nominee is 2025.
Now I realize that the amount of noise and uncertainty in the delegate-information system is pretty high, which has accounted for the different numbers you can get from various sources. But unless I'm not just off but wildly off in my reasoning, it's impossible for either Clinton or Obama to win the nomination on pledged delegates alone at this point; they're going to need superdelegates to do it:
There are 19 states left to go in the Democratic primaries. According to
http://www.realclearpolitics.com/epolls/2008/president/democratic_delegate_count.htmlthey account for 963 total delegates. That source doesn't state how many of those are pledged and how many are superdelegates, but it does say that 796 of all the delegates are superdelegates. Well, there are 4049 delegates total (which is why the winning threshold is 2025), so that means superdelegates are a little less than 20% of all delegates. If we assume that also holds true for the 19 states left to go, then of their 963 delegates, 193 are supers and 770 are pledged.
Even if every pledged delegate remaining went for Obama, or for Clinton, that still wouldn't put them at 2025. So I can't see how this race isn't going to come down to who the supers vote for, and since they're allowed to change their minds as much as they want between now and the convention in August there's no way to be sure what the outcome will be, unless one of the two candidates withdraws from the race... and I have my doubts that either would be willing to do that.
See you in August?