From Democrat(ic) Pennsylvania Senate candidate Joe Torsella's perspective, Sen. Arlen Specter's decision to switch parties hasn't changed the dynamic of the race very much and has provided an opportunity to capitalize on a group of Democrats that won't accept the Specter into the party.
Mark Nevins, a spokesman for Torsella, told the BBR the campaign was already preparing to take on Specter, now it is just having to move up its timetable.
The campaign, Nevins said, has heard from activist, or grassroots, Democrats who have encouraged Torsella to stay in the race.
From Daily Kos:
The founder of Kos said today that Specter is "just begging for that primary challenge" (based in large part on today's comments about Jeff Sessions) and also added in a separate post with some NSFW (maybe not-safe-for-work) language, "Keep it up Arlen, your Joe Lieberman impersonation is so spot-on, that we can't wait to take you on in the Democratic primary."
From Roll Call tonight: Specter Will Be Junior Democrat on Committees:
Despite promises from Senate Majority Leader Harry Reid (D-Nev.) that Sen. Arlen Specter would retain his seniority after switching parties, Specter will be put at the end of the seniority line on all his committees but one under a resolution expected to be passed on the floor late Tuesday.
From the Huffington Post: Dean, Carville Warn Specter: Shape Up Or Face Primary
"I'm pleased that he saw the light and decided he would be a better fit for the Democratic Party and I think you have to allow for his political views to evolve," said former DNC chairman Howard Dean in an interview with the Huffington Post. "But he won't win the Democratic primary by taking the position that you should not have [the Employee Free Choice Act] or a public option for health insurance... If he takes these kinds of views, of course there is going to be a Democratic primary."