Democratic presidential candidates Barack Obama and Hillary Clinton kept up their sparring while campaigning today in Pennsylvania even as voters in Mississippi headed to the polls for a primary there. Obama made a final appeal to Mississippi voters this morning, talking about energy, education and the economy in Greenville, before heading north. Obama, who's vying to become the first black U.S. president, is heavily favored in the state, where more than half of the Democratic electorate is black.
Clinton renewed her line of attack on the Illinois senator's experience and record, telling a crowd of several thousand people in Harrisburg, ``There's a big difference between talk and action.''
The former first lady ``will say and do anything to win this election,'' Obama spokesman Bill Burton said in a statement sent to reporters ahead of her speech.
Both campaigns are turning their attention to Pennsylvania, which has 158 pledged delegates available in its primary on April 22, compared with 33 at stake today in Mississippi. Clinton, a senator from New York, trails Obama in the race for Democratic convention delegates who will select the party's nominee. She has set Pennsylvania as a key test of her campaign.