Pennsylvania: Safe win for Clinton?

By Jon Hurdle

PHILADELPHIA (Reuters) - Pennsylvania, the biggest remaining state in the race for the Democratic presidential nomination, should be a safe win for Hillary Clinton but experts say there are pockets of vulnerability for Barack Obama to exploit.

"If the election were held today it would probably be Senator Clinton by 10 points, but seven weeks in this crazy race, anything can happen," said Clay Richards, assistant director of the Quinnipiac University Polling Institute.

Victories in Ohio and Texas last week allowed Clinton to brush off talk of her imminent political demise. But she still lags the Illinois senator in the state-by-state race for delegates to the party's nominating convention this summer, where the candidate for the November election will be chosen.

Pennsylvania on April 22 is one of the best chances the New York senator has left to prove to Democratic voters and party leaders that she is the best candidate to secure a victory in November in big states and swing states.

With neither Clinton nor Obama likely to win enough delegates through the state contests to secure the nomination, Pennsylvania will be vital to Clinton's hopes of gaining support from "superdelegates" -- elected officials and party insiders who can vote at the convention as they choose.

Mark Nevins, communications director for Clinton's campaign in Pennsylvania, said the state was "a proving ground."

"You can't really expect to win the general election if you can't win Pennsylvania," he said.

Clinton was ahead in the polls by as much as 20 percentage points at the start of the year but Obama's string of victories in February pushed him closer, narrowing the gap to just 6 points in the latest Quinnipiac poll in late February.