Gore again?

Robert D. Novak wrote on Townhall Former Virginia Gov. Mark Warner's decision to withdraw from consideration for the 2008 presidential nomination has produced speculation at high levels of the Democratic Party that former Vice President Al Gore may run again.

Why would that stop him from running?

Warner was to challenge front-running Sen. Hillary Clinton from the right, while Gore is on her left. Nevertheless, Gore succeeds Warner as the most likely "non-Hillary" to battle her for the nomination.

I suspect Gore and Kerry will both run against her from the Left, but that with Mark Warner out of the race, if Republicans can nominate a centrist that should guarantee them the election.