From the WSJ and AP:
SANTA FE, New Mexico -- New Mexico Gov. Bill Richardson, America's only Hispanic governor, is endorsing Sen. Barack Obama for president, calling him a "once-in-a-lifetime leader" who can unite the nation and restore America's international leadership.
Gov. Richardson, who dropped out of the Democratic race in January, is to appear with Sen. Obama on Friday at a campaign event in Portland, Ore.
The governor's endorsement comes as Sen. Obama leads among delegates selected at primaries and caucuses but with national public opinion polling showing Sen. Hillary Rodham Clinton pulling ahead of him amid controversy over statements by his former pastor.
Gov. Richardson has been relentlessly wooed by Sens. Obama and Clinton for his endorsement. As a Democratic superdelegate, the governor plays a part in the tight race for nominating votes and could bring other superdelegates to Sen. Obama's side. He also has been mentioned as a potential running mate for either candidate.
Hat tip to Christopher of From The Left.