Blogger Al Giordano has theories on why John McCain has apparently pulled up stakes in Colorado and other states and staked his campaign on winning Pennsylvania. One, McCain got sick of news blaring that he was “defending red states” rather than trying to pick off blue ones. Two, McCain “will try to relive the April 22 Democratic Primary in Pennsylvania: a reappearance by Rev. Wright and Obama's ‘bitter’ comments in paid TV ads combined with a tightening of poll numbers.” It’s unclear how Rev. Wright will reappear, but it’s an interesting theory. Moreover, McCain’s gambit might convince the national media to converge on Pennsylvania, making it the round-the-clock cable-news set that Florida was in 2000 and Ohio was in 2004.