NEWPORT NEWS, Va. – President Barack Obama made a cross-country swing for cash and Hispanic support Monday amid signs that Republican rival Mitt Romney is cutting into his lead in some key swing states as the campaign enters its final four weeks.

Romney tried to keep momentum on his side by bolstering his foreign policy credentials and rallying voters in Virginia, one of the most closely fought battlegrounds. "Things are going pretty good," a visibly upbeat Romney said after turning his motorcade around to pose for pictures with children who lined up to wave as he passed their elementary school.

Romney's commanding debate performance last Wednesday appears to have given him a much-needed psychological and polling boost, as large crowds flocked to his rallies over the weekend. Democrats say private surveys taken after the debate show Romney making progress in many key battleground states after Obama built a lead last month, though they say Obama is still ahead in places like Ohio and Virginia.