It was Pennsylvania night at the Democratic National Convention, with both Sen. Bob Casey and Gov. Rendell doing their bit for Barack Obama, each in his own way.

The senator delivered a personal and wide-ranging talk, the governor a tougher and more policy-oriented address, focusing on the single subject of energy.

For Casey, the appearance held special significance.

Sixteen years ago, at the party’s convention in New York, his father, an outspoken opponent of abortion, was not allowed to speak.