[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/04/29/art.chandler.ap.jpg caption="Ben Chandler is backing Barack Obama."]WASHINGTON (CNN) – Barack Obama will be endorsed by Kentucky Rep. Ben Chandler Tuesday, three weeks before voters from his state head to the polls in this marathon march to the Democratic presidential nomination, an aide to the Illinois senator tells CNN.
Chandler, whose district includes the city of Lexington – home of the University of Kentucky - and the state capital, Frankfort, was first elected in February 2004 in a special election to fill the seat of retiring GOP Rep. Ernie Fletcher. Fletcher had defeated Chandler in the gubernatorial race months earlier.
Chandler joins fellow Democratic Rep. John Yarmuth as the second Kentucky superdelegate to endorse Obama. Sen. Hillary Clinton has the backing of three other Kentucky superdelegates, leaving three - including sitting Gov. Steve Beshear - undeclared.
Earlier Tuesday, North Carolina Gov. Mike Easley endorsed Clinton’s presidential bid. North Carolina voters head to the polls in one week.
UPDATE: Iowa Democrat Richard Machacek, a member of the Democratic National Committee and superdelegate, has also endorsed Barack Obama for president, an Obama aide confirmed to CNN.
Machacek’s support for Obama was first reported late Tuesday morning by The Des Moines Register.