caption="Rudy Giuliani will hit the campaign trail with Saxby Chambliss in Georgia on Tuesday."]
(CNN) - Add Rudy Giuliani to the list of big name surrogates who are making campaign cameos in the last remaining Senate election this year.
The former New York Mayor and Republican presidential candidate teams up today with Saxby Chambliss at campaign events in Woodstock, Georgia.
Chambliss is the freshman Republican senator from Georgia who is fighting to keep his seat. He faces a runoff election next Tuesday against Jim Martin, a former Georgia state lawmaker.
Chambliss won a plurality of the vote on Election Day three weeks ago, but Georgia state law calls for the winner to grab 50 percent plus one vote. Due to the inclusion of a third-party candidate, Chambliss fell just shy of that threshold, forcing a runoff.
Giuliani is the latest former GOP presidential candidate to stump with Chambliss. Sen. John McCain campaigned with Chambliss just nine days after losing the presidential election to Barack Obama. Nine days ago, former Arkansas Gov. Mike Huckabee, who ran for the Republican nomination before dropping out in March and backing McCain, campaigned with Chambliss. Former Massachusetts Gov. Mitt Romney teamed up with Chambliss on Friday. Romney ended his presidential bid in February and backed McCain.
Giuliani dropped out of the Republican presidential race in late January and immediately endorsed McCain. Giuliani, Huckabee and Romney could all make another stab at presidential politics in 2012.
Martin is also getting some major-league help. Last week former President Bill Clinton campaigned with Martin in Atlanta and Sunday former Vice President Al Gore teamed up with Martin.
Do these big name surrogates make a difference?
"Generally they can help boost turnout, because of all the media attention. Turnout in a runoff election is often very low compared to a presidential election and each side needs to get as many of their voters to the polls as possible," says CNN Senior Political Analyst Bill Schneider.
Democrats have so far picked up seven Senate seats in this year's election, with the Republican seats in Georgia and Minnesota still undecided. In Minnesota, freshman GOP Sen. Norm Coleman topped his Democratic challenger, Al Franken, by just 215 votes, triggering an automatic recount which will extend into December.
If Democrats take both remaining contests, they'll reach their pre-election goal of controlling 60 Senate seats, which would be a filibuster-proof majority. A filibuster is a move by the minority party in the Senate that basically brings the chamber to a standstill by blocking votes on legislation.