Edwards to endorse Obama. To appear with him in Grand Rapids.

WASHINGTON–The Obama campaign confirmed that former presidential candidate John Edwards is endorsing Sen. Barack Obama (D-Ill.) at a Wednesday night rally in Grand Rapids, Mich.

Edwards, a former North Carolina senator, appears with Obama in a key swing state involved in a dispute over whether their delegates will be seated at the Democratic National Convention. Edwards nod comes after Obama beat Sen. Hillary Rodham Clinton (D-N.Y.) in the North Carolina primary. Edwards backing is seen as helping Obama close the deal with wavering superdelegates. Edwards was one of the bigger catches and it comes after a humiliating loss to Clinton in the West Virginia primary–where Edwards got seven percent of the vote.