By The Associated Press
Friday, April 18, 2008 3:14 PM

Virginia Governor Tim Kaine will spend Saturday in Pennsylvania campaigning for his presidential choice, Sen. Barack Obama (D-Ill.).

Kaine will headline two get-out-the-vote rallies Saturday morning in Wilkes-Barre and Scranton heading into Tuesday's Pennsylvania primary showdown between Obama and Sen. Hillary Clinton (D-N.Y.).

The Virginia Democrat was among the first governors to endorse the Illinois senator in early 2007.

Kaine is among those mentioned by pundits as a possible running mate for Obama should he win the Democratic nomination.

Kaine has said repeatedly he intends to serve out his term, which ends in January 2010, but has not flatly ruled out a spot on the ticket.