8:30 AM ET: Despite what some bean counters were saying last night, this is turning into a huge night for Clinton. First off, her delegate gain so far sits at 25 delegates, with 75 delegates to go. If Obama is going to make that up, he's going to have to do it in the Texas caucuses as, despite what some people were saying, Clinton did win the primary delegate count 65-61.
The Green Papers projections give Clinton 8 more delegates in Ohio than she currently has, with CD10 and CD11 (both, Cleveland, which Obama only won by 7%) still out, and Obama will probably only net something like 1 delegate from those 2 districts. And based on CNN results thus far, Obama isn't doing as well in the Texas caucuses as he had hoped.
And Obama better hope my caucus projections are wrong, because I actually have Clinton winning that as well, 35-32. Though half of that is guessing at this point (basically guessing on how many delegates each district gets and applying the current results)
Vermont starts us off by closing at 7:00 PM Eastern, followed closely by Ohio, which closes at 7:30 PM Eastern. There is then Texas which, except for El Paso, has it's primaries end at 8:00 PM Eastern and the local caucuses start around 8:15 PM. Finally, Rhode Island polls close at 9:00 PM Eastern.
I'd have to believe that Clinton would have to at the very least break-even in delegates won for it to be a non-crippling night for her. Realistically, Clinton probably needs to be about +20 to even plausibly say she "won" and in reality probably needs something on the order of +50, which almost certainly won't happen unless she pulls a shocker.
Also, at the rate that Obama is picking up superdelegates (the gap has now closed to less than 50 between them on that count), it's likely that if Obama appears to seal the deal tonight, that he'll almost certainly lead Clinton in superdelegates by the end of the month, if not before. Once that happens, I can't possibly see any reason or justification for Clinton to stay in the race, even if she wants to.
Her strategy now is to keep it close enough to justify arguing that it's an effective tie at the convention (say, within 1% or 2% of pledged delegates, or between about 30 and 65) and to persuade enough superdelegates to vote for her to make up the difference. However, that would be difficult if you have the pledged delegate deficit she is looking at right now (-159.5 going into tonight) and can't even beat Obama in supers. Her campaign would be effectively, if not officially, over at that point.
Such an argument would also be bolstered by a popular vote victory. However, Clinton is down by about 220,000 even including Michigan and Florida and not including many caucuses. Once you take Michigan and Florida out, she's down by over 800,000. She'll need pretty significant margins of victory tonight to even close the first number, to say anything about the 2nd number.
Personally, my prediction for tonight is:
Obama takes Texas by double-digits (say, 56/44)
Obama barely wins Ohio (51/49 or something)
Obama routs Clinton in Vermont (say 65/35)
Clinton barely wins in Rhode Island (52/48 or thereabouts)
In theory, Clinton should be giving her nomination concession speech within 72 hours if those results came to pass.
As for November, I'm thinking about doing something similar to 2006. You can see that thread here, and information I put about for volunteers at the time here.
My grand vision would be to have every house, senate, and governor's race (and perhaps other important contests) covered. However, I probably won't start organizing that until September or October. This is just a heads up for anyone who may be interested in it to look out for it eventually.