As to the Presidential race: Game Over. The McCain campaign has officially exploded. If Palin is on the ticket they lose everybody who isn't a wingnut and lose. If Palin is replaced they lose the wingnuts and lose.
Rumor going around the Republican National Committee (RNC) is going to yank funding from McCain and put it into Senate and House races, trying to salvage something to stave off a debacle. (And it is starting to look like one.)
I'm thinking the total GOP vote goes below 2000 (50.4 million) - as the Moderate Republicans sit this one out and the Undecideds and loosely-attached jump to Obama - while the Democratic vote is more than 2004 (59 million & change) to about 62 to 63 million. IF this happens AND the votes are more-or-less evenly distributed the GOP is hosed. In the last redistricting the GOP gerrymandered to the max assuming the vote distribution would remain constant. A shift of 3% could easily flip 50 - 70 house seats.
Man oh man. Hold onto your seats. This is going to be one wild ride.
The ultra-wealthy hold all the cards; the rest of this bullshit is just ... bullshit. In the end, might makes right. Nothing has changed since the caveman.