There is all sorts of furious speculation about whether or not the Democrats will take the 60 seats in the Senate necessary to prevent a GOP filibuster.  Larry Sabato assumes that Begich, Udall (CO), Shaheen, Udall (NM), Merkeley and Warner win and that Franken loses.  But he also thinks that Chambliss will not get the 50 + 1% necessesary under Georgia law to win the race against Jim Martin, and that it will go into a runoff on December 3.  (Recent polls have put Libertarian Allan Buckley between 2-5%, and Pollster currently has Chambliss running 45.7% to Martin’s 43.5%.

Would a runoff favor Martin or Chambliss?  Nate Silver:

It is hard to say which candidate would benefit from a run-off, but the default assumption is probably Saxby Chambliss, who wouldn’t have to contend with an Obama turnout surge then, and who might benefit from an appeal to divided government (assuming that Obama wins the Presidency). Then again, in a world where Obama has prevailed, Democratic morale is likely to be much, much higher than Republican morale, and Democratic wallets are likely to be a bit more open; we could easily see eight figures pumped into a run-off election from each side.

There is a very good chance this could be the 60th seat, particuarly with Franken close.

For anyone looking to have the nerve-shredding over on this coming Tuesday — it may not happen.