Several reports that Edwards is endorsing Obama, confirmed by Thrush in our DC bureau, who calls it "a major blow to Hillary Rodham Clinton’s flagging presidential campaign."
More from Thrush:
"The announcement, after months of intense lobbying by Clinton, could help the Illinois senator overcome his trouble with white, blue-collar voters who liked Edwards’ economic populist message.
"Edwards endorsement is more than symbolic -- it likely means that 19 delegates won by the former North Carolina senator are likely to now back Obama."
It will reportedly come at an event in Grand Rapids tonight. Look here, and here, and here.