There's another ex-presidential candidate whose stock just went up: NM Gov. Bill Richardson. There has been an open question since Richardson endorsed IL Sen. Barack Obama (which caused former/perenial Clinton strategist James Carville to call him Judas, since Richardson had served in two capacities in then-President Bill Clinton's cabinet): what did Richardson want?
Richardson is savvy enough to know that there was no chance that Obama would put him on the ticket. Having an African American nominee is incredible. Having him pick a Hispanic VP candidate is too much. Richardson knew that the best he could hope for would be Secretary of State.
Richardson's main rival for that position was none other than DE Sen. Joe Biden. So, Richardson must have breathed a sigh of relief on Saturday morning when Obama took Biden out of running for State. In some ways, this is a better allocation than the other way around. Richardson may have spent a decade in the house, but he's more of a negotiator and an executive than a legislative mastermind. Furthermore, Richardson did not prove to be the best campaigner or debater last year. Biden, on the other hand, knows the legislative process better than almost all active politicians.
This must all be very exciting for Richardson, as he just became the front runner to be the first Hispanic Secretary of State and the highest ranking Hispanic in American history.