Republican Senator Saxby Chambliss is battling for a second term, fighting a surge of Democratic voters and frustration over the economy.

The “what-if” scenario gaining currency in Georgia political circles goes something like this: After all the votes are counted on Election Day none of the three U.S. Senate candidates gets a majority.  The race heads into a Dec. 2 runoff between Republican incumbent Saxby Chambliss and Democrat Jim Martin. Democrats have picked up enough Senate seats nationally to pull within striking distance of a filibuster-proof 60-member supermajority.