All Arlen, all the time today. Here’s a roundup:

The Senate last night stripped Snarlin‘ of his seniority on committees, a week after the 29-year veteran of the chamber quit the Republican Party to join the Democrats, reports The Washington Post. Those crazy Democrats. Earlier in the day, Specter got a standing ovation from the Senate Democratic Caucus with which he lunched for the first time. Meantime, Democratic Rep. Joe Sestak sounds a bit more irritated by Specter’s “power grab” in Pennsylvania during a radio interview on Fox’s Brian and The Judge show. Sestak said he’s more inclined to run against Snarlin’ in the primary. Should he? The Progressive Change Campaign Committee wants to know your opinion. Meantime, Douglas W. Kmiec, a professor at Pepperdine University School of Law, says the Republican Party is going to miss the senior senator’s “prudence.” Josh Marshall wonders if Specter was kidding when he said he was supporting Norm Coleman. And then there’s Tom Ridge: Pennsylvania’s former governor is reportedly weighing a run in the GOP primary for Specter’s seat. Gil says that ain’t gonna happen, and I think he’s right about that — but for a different reason: Ridge knows Specter well (Ridge, in endorsing Specter in 1996, said this: “He is as tough and untiring a campaigner as Pennsylvania’s ever seen and one of the brightest senators that we’ve ever seen…”). Charlie Crystle is still baffled by all the joy over Specter’s defection.