Republican John McCain and running mate Sarah Palin are sweeping through battleground Pennsylvania as polls show them trailing the Democratic ticket, but McCain says it's wonderful to fool the pundits and is vowing to pull an upset.

McCain told supporters in Hershey, Pa., on Tuesday that, in his own words: "I'm not afraid of the fight. I'm ready for it."

The Arizona senator continued a sharp assault on Democratic rival Barack Obama during a noisy rally in Hershey.

Palin defended their campaign's harsh attacks on Obama.

The Alaska governor says Obama is not being candid about his tax plans, and she says that it's not mean-spirited or negative to call out someone on his record.