PoliticsPA has a copy of poll results from PA-08. The opening paragraph tells the gist:
Our survey shows that Patrick Murphy is well-positioned to win both the Democratic primary against Andy Warren and the general election against incumbent Republican Mike Fitzpatrick if he has the resources to communicate with voters. A Murphy win in this suburban Philadelphia district could be key to Democrats re-taking control of the U.S. House of Representatives.
See the full survey for details.