Well, there's a bit more to this story than what is in the letter. Weicker has always been on the far left side of the Republican Party. In fact when he lost his Senate seat it was William F. Buckley who endorsed his opponent, Joe Lieberman, for the seat. Later, when Weicker was governor, it was not as a Republican but as an independent. So, he's been out of the party fold for quite some time.

However, the flip side of this story is that Joe Lieberman who was his party's nominee for VP and who beat Weicker, now endorses John McCain. That, to me, is a bigger story about how the Democratic Party, which used to be concerned about national security has become what it is today.