Also from the original Nate Silver article CQ Politics borrowed from:
snip> "On the other hand, it's hard not to imagine that this process has been strengthened, accentuated, catalyzed, by Joe Sestak's primary challenge. You can draw a pretty clear line in the sand from when Specter went from sorta, kinda Democrat to OMG totally! Democrat, and it coincides with the date that Sestak announced his challenge."
snip> "The real question is how Specter will behave if and when he wins the primary challenge, and the pressure from the left is off."
snip> "But once the primary pressure from Toomey had begun to heat up -- as emphasized by a shocking March 25th Quinnipiac poll that put Specter 14 points behind his Republican rival -- he had become quite conservative, voting with Democrats only 16 percent of the time in his final month or so as a Republican."
snip> "On the one hand, all of this is pretty rational -- at any given moment, Specter was making moves that would seem to have maximized his chances of survival. On the other hand, it seems to have triggered plenty of fatigue with voters, who just can't be sure what they'll get if they vote to re-elect him. Arlen Specter is either just about the best reflection or the worst reflection on the state of our Democracy -- it's just hard to say which one."
http://www.fivethirtyeight.com/2009/07/since-primary-challenge-specter-voting.htmlThis article just seems to further illustrate that Arlen Specter has few principles, and will take any position, vote any way, to get re-elected.