From CBS News' Maria Gavrilovic:
EVANSVILLE, IND. -- Barack Obama continued to court working-class voters this morning, a demographic that has become critical in the Indiana and North Carolina primaries. As he and Hillary Clinton remain in a dead heat in Indiana and she appears to be closing in on his lead in North Carolina, Obama realizes that he can't take anything for granted.
"We're working as hard as we can and I desperately want every vote here in Indiana and in North Carolina," Obama told reporters this morning during a stop at a local construction site.
As he toured the site, Obama spoke to workers about the economy and the gas tax holiday, an issue which has become a sticking point in this election. He called the proposal by John McCain and Hillary Clinton a political "stunt" and said the issue comes up every two years during an election cycle. Obama said a second stimulus check would be a better alternative for short term relief.
"That would help people immediately relieve some crisis and that's money that you know won't be sopped up by oil companies."
He said he is going to be bouncing back and forth between North Carolina and Indiana today and tomorrow.