Fourth Pa. superdelegate tips to Obama

HARRISBURG, Pa. - February 22, 2008 - Leon Lynch, a retired vice president of the Steelworkers union from Pittsburgh, announced his endorsement in a statement released by the Illinois senator's campaign.

In the statement, Lynch says Obama is the only candidate he's met capable of motivating and leading the American people in a new directiion.

Obama has previously been endorsed by three other Pennsylvania superdelegates.

Thirteen have endorsed Senator Hillary Rodham Clinton of New York and the other 12 remain neutral.