Pennsylvania polls predicting problems for Clinton’s campaign?

The next primary is in Pennsylvania in three weeks time. It’s a state almost everybody has already called for Hillary Clinton. Some have even suggested that it will be a big win for Senator Clinton, and that this would provide the necessary momentum to narrow Barack Obama’s delegate lead in the remaining nine contests.
The polls certainly indicated that it would be a huge hurdle for Senator Obama to leap, but a poll today shows that he’s gaining ground as rapidly as he’s touring the state in his battle bus. In fact, the poll indicates that Clinton’s lead has been cut in half, to just a five point advantage (47% to 42%), which must be a deep concern to the Clinton camp.
If the poll is correct, Barack Obama has three weeks to swing 2.5% of Clinton supporters to win the state. That’s remarkable in itself given the double-digit lead Hillary Clinton enjoyed just a couple of weeks ago, but with his past track record and considerably more money to spend it could now be a real possibility.
Three weeks is a very long time in politics, and this is only one poll, but it’s clear that the race to win Pennsylvania is now on. The stakes are very high - an Obama win would be monumental, a Clinton loss perhaps fatal. One thing is certain though: this protracted primary contest is going to be exciting.