I agree with the gist of most of the commentary that's been written on the subject thus far: it's clearly another blow for Republicans and a boost for President Obama.

As to Specter: it's hard to find anything noble or inspiring about a man who cites bad poll numbers as the justification for shifting his allegiances. At least Joe Lieberman stood on a principle (his belief in the justification for the war in Iraq) and others who've switched parties in the past (like Jim Jeffords) have cited a number of philosophical differences that caused them to change sides.

Not Specter. He made clear his decision was motivated by the fact he desperately wants a 6th term in the Senate any way he can get it, and that he also wants to preserve his seniority so he can continue to work on issues that he cares about (the operative word being "he.")

I suppose we should at least give him credit for being honest that this is all about his personal ambition. Beyond that, however, there's not much to admire about Specter's motivations.

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