Grasping for optimism...

Two reasons that there remains a glimmer of hope:

First: 

FOX News/Opinion Dynamics poll from Oct. 20: Obama 49, McCain 40. 

FOX News/Opinion Dynamics poll from Oct. 29: Obama 47, McCain 44.

Second:

NBC/Mason Dixon poll of likely Pennsylvania voters from Oct. 28: Obama 47, McCain 43, Undecided 9.