Lots of Senate speculation, including speculation about getting to 60 votes and speculation about stripping Joe Lieberman of his committee chairmanship. I’ve heard less speculation about what John McCain will do. He’s an old man, and by all accounts is neither well-liked by his Senate GOP colleagues nor does he like them. Is it so implausible that he’ll just retire after the election; take his toys and go home to one of his eight homes? His successor, appointed by Janet Napolitano, would presumably be a Democrat. Maybe to balance things out, he and Lieberman can simultaneously retire (Connecticut’s governor is a Republican), and ride off into the sunset together.