Obama Brings Closing Argument to Keystone State

The Democratic nominee tries to keep voters' energies high during a dreary and freezing outdoor rally at Widener University in Chester, Pennsylvania. References the weather several times in his stump speech, reminding supporters that even if it's raining, sleeting or snowing next week, he needs them to get out the vote. "We can't afford to slow down, sit back, or let up for one day, one minute, or one second in this last week. Not now. Not when so much is at stake." Read Obama's full remarks here. McCain camp responds here.