“Pennsylvania is a must-win for Mr. McCain, and it may be his last stand”
I guess this last stand reference is to suggest that the McCain Campaign is besieged and without hope (sounds like Toyko Rose). There is, as long as we exist in this old world, ALWAYS another day. In two previous “last stands” namely “The Alamo” and “Little Bighorn” things, ultimately, did not turn out that well for the victors.
Two more days until VICTORY! Keep the faith!!