Exit polls: New voters boost Obama
Clinton on Obama: “Why Can"t He Close the Deal?"
Drunkblogging Pennsylvania — Vodkapundit's Stephen Green …
Clinton Holds Off Obama in Pennsylvania
Why Can't Obama Win Pennsylvania? *
Gallup Daily: Obama Maintains National Lead
In Pennsylvania, What Constitutes a Win?
Obama Campaign Memo on Clinton's Pennsylvania Expectations
Clinton wins in Pennsylvania, NBC projects
Novak: “McCain, Portman, and Victory” [Larry Kudlow]
Why McCain Can't Win — For Sen. John McCain this is the best of times.