The heavens opened and rained gold down on McCain - in the form of Abramoff's Greenberg-Traurig emails - many of which implicated dozens of Senators, Congressmen and Bush Administration officials, all the way up to Rove himself. McCain had subpoenaed the emails in early March, when he called for the Abramoff hearings in the Senate Indian Affairs Committee the week after the story broke in the WaPo; however, until the emails arrived on his desk in mid-April, he had no idea that he was in possession of enough blackmail material to demand the Republican nomination in 2008. Heck, who needed to be VP under Kerry when you could be king!
I wouldn't be surprised if McCain approached Kerry after calling for the Abramoff hearings, thinking he would be persona non grata in the GOP. But almost immediately after seeing the treasure in the Abramoff files, he sent Weaver on a second mission - to meet in mid-May with Karl Rove. Three weeks later, McCain was campaigning with Bush, and the Abramoff hearing were postponed until further notice.
Yes, I keep beating this dead horse, but it's amazing how it fits more and more with all the new details which come out over time. If only Kerry paid attention to our trivial little Indian committee, he'd probably be President today.