POLITICAL BRIEFING

PENNSYLVANIA STORY: Pennsylvania Gov. Robert P. Casey, who has emerged as perhaps the Democratic Party’s most vocal foe of unrestricted abortion rights, ultimately was persuaded to vote for Clinton’s nomination at the convention, but his efforts to help the ticket carry his state are expected to remain halfhearted. . . . Casey arrived in New York already riled because party leaders clearly had no intention of letting him ascend to the convention podium to air his abortion views. His anger soared when he learned that a Pennsylvania woman supporting abortion rights--and a Republican, no less--would briefly address the delegates. “It will not be easily forgotten,” he said. . . . The rift became so wide that Casey refused to deliver his state’s votes during the nomination roll call Wednesday night because he did not want to give party officials the chance to say he actually had spoken on the convention floor.