Sen. Inouye, who was one of the only senators to have come out in support of Lieberman's fifth-party run, is now the first such senator (and as far as I know the first such politician) to withdraw his endorsement of the Connecticut for Lieberman candidacy, according to the Honolulu Advertiser (hat tip ehananoki at dKos.)

And his reasons for doing so?

Inouye initially said that he'd support Lieberman as an independent because he was concerned about the single-issue focus on the war in Iraq that turned primary voters against Lieberman, who is strongly aligned with President Bush on the war.

But Hawai'i's senior senator said he was disappointed when Lieberman made a speech "very critical of the Democratic Party."

"I told some of my friends after he gave his speech saying the party isn't the party he knew that he doesn't get my support," Inouye said in an interview.

From comments here, it seems like this was at least partly due to pressure from local Democrats on Inouye.

Who will be the next to jump Joe's sinking ship?

Update: Bob Geiger has more at HuffPo:

My guess was that the middle finger Joe Lieberman gave Democratic voters in Connecticut after they selected Ned Lamont as their Senate nominee on August 8 and Joe's ill-advised independent bid for the Senate would run its course and begin to unravel by the end of September.

It looks like it's starting a month early.