And so it begins.

The Hillary Rodham Clinton campaign announced that Chelsea Clinton would campaign on behalf of her mother later this afternoon at the University of Pennsylvania in Philadelphia.

In a statement, the campaign said it would be the first of many trips to Pennsylvania for Chelsea Clinton. I’d expect that Erie would be one of her stops.

We should expect a barrage of visits from the candidates and their surrogates now that Clinton has bounced back with big wins in Texas, Ohio and Rhode Island.

Pennsylvania is in play in a big way.

— John Guerriero