[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/05/20/art.billbarack0520.gi.jpg caption="Gov. Richardson endorsed Sen. Obama in March."]
NEW YORK (CNN) – Former presidential rival turned supporter Bill Richardson will campaign this week for Barack Obama in Puerto Rico, 10 days before the Commonwealth holds its Democratic primary, a Richardson aide tells CNN.
Richardson, the governor of New Mexico and former Cabinet official, is one of the most prominent Hispanic politicians in the nation. He sought the Democratic presidential nomination, but dropped out of the race after a poor showing in the New Hampshire primary.
While Richardson served in President Bill Clinton’s Cabinet, he chose to endorse Obama over Hillary Clinton in late March. Hillary Clinton has performed better than Obama with Hispanic voters, although the latest Gallup tracking poll suggests that the Illinois senator has erased his disadvantage with that key voting bloc.
Richardson will visit the Commonwealth on Thursday.
Fifty-five pledged delegates are at stake June 1 when Puerto Rico Democrats head to the polls.
CNN will have exclusive poll data from the Puerto Rico primary.