I never would've though a billboard-sized portrait of GW with the words "Our Leader", paid for by a media company was likely either.
I dunno - 3 years or so into this term, it may become apparent that Iran is the real threat in the Middle East. Intelligence might show Al Queda leaders, WMD, captured Americans being tortured- whatever. Bush may have to reluctantly order another full scale invasion to save America from an imminent threat. And this country hates to change presidents in the middle of a war, right?
The Republicans have a majority in both houses. I could see them introducing legislation to rescind the 2 term limit so GW can finish what he started because it's infinitely better to be "fighting them over there than fighting them over here."
I don't think its likely either - just giving the darker side of my imagination a little free reign.