Paul Ryan dings Joe Biden over gaffe

NORTH CANTON, Ohio—We won't have to wait for the vice presidential debate in October to see Paul Ryan and Joe Biden take swipes at each other, because the pregame show is already playing out on the campaign trail.

Speaking on Thursday at a rally in the gymnasium of Walsh University here, Ryan took a lighthearted jab at the vice president for confusing the state where he was campaigning earlier this week.

"It is great to be here in North Canton," Ryan said when he stepped on the stage. "Or as Joe Biden might say, it's great to be here in Nevada!"

At a speech in Danville, Va., on Tuesday, Biden told the crowd, "With you—and I mean this—with you, we can win North Carolina again, and if we do, we win the election if we win you."

Danville, located in southern Virginia, borders North Carolina.