After Sen. John McCain (R-Ariz.) campaigned for Sen. Saxby ChamblissSaxby ChamblissLobbying World Former GOP senator: Let Dems engage on healthcare bill OPINION: Left-wing politics will be the demise of the Democratic Party MORE (R-Ga.) last week, former Massachusetts Gov. Mitt Romney (R) announced today that he will follow suit.

Romney will travel to Georgia Friday to appear at rallies in Atlanta and Savannah, in addition to private fundraisers. Chambliss is running against Democrat Jim Martin to keep his seat. After Chambliss garnered less than 50 percent of the state's vote on Nov. 4, a Dec. 2 runoff was triggered. Chambliss bested Martin 49.8 percent to 46.8 percent.

"This is a critical election whose outcome will be important to maintaining a balance of power in the Senate," Romney said today in a statement released through his Free and Strong America PAC. "It is critical that Republicans safely retain the ability to filibuster in order to prevent the worst abuses of single party rule.