Terrific news (and another superdelegate):

WASHINGTON (AP) -- A leader of the Democratic Party under Bill Clinton has switched his allegiance to Barack Obama and is encouraging fellow Democrats to "heal the rift in our party" and unite behind the Illinois senator.

Joe Andrew, who was Democratic National Committee chairman from 1999-2001, planned a news conference Thursday in his hometown of Indianapolis to urge other Hoosiers to support Obama in Tuesday's primary, perhaps the most important contest left in the White House race. He also has written a lengthy letter explaining his decision that he plans to send to other superdelegates.

"I am convinced that the primary process has devolved to the point that it's now bad for the Democratic Party," Andrew said in a telephone interview with The Associated Press.

Bill Clinton appointed Andrew chairman of the DNC near the end of his presidency, and Andrew endorsed the former first lady last year on the day she declared her candidacy for the White House. Andrew said in his letter that he is switching his support because "a vote for Hillary Clinton is a vote to continue this process, and a vote to continue this process is a vote that assists (Republican) John McCain."

Andrew served as DNC chair alongside Ed Rendell. And as the article noted, he's an Indiana native.

Andrew said he finally decided to switch to Obama after watching Obama's handling of the Wright and gas tax controversies. He also said the Obama campaign hadn't asked him to switch.

Might this be the opening of the superdelegate floodgates?

Update: Here's Andrew's letter to his fellow superdelegates.