I wouldn't read too much into this, but I think it's worth mentioning (and hey, it's a slow day in Twitter-land) that of the six twitterers that Sen. Arlen Specter (D-Pa.) follows, none are Democrats.

In fact, Specter only follows two lawmakers: Sen. Chuck Grassley (R-Iowa) and 2008 GOP presidential nominee John McCain (Ariz.) - two of Congress' most prolific tweeters.