Pennsylvania Senate candidates Fetterman and Oz to meet in their first and only debate

Pennsylvania Democratic Lt. Governor John Fetterman and Republican Dr. Mehmet Oz are facing off Tuesday night in their first and only debate in the state's highly-watched and contentious Senate race. 

The race is considered a toss-up with just two weeks before Election Day — and the results could determine which party controls the Senate, which is currently evenly split 50-50. Fetterman and Oz are vying for the seat being vacated by retiring Republican Senator Pat Toomey. 

Polls have been tightening over the past few months. The CBS News Battleground Tracker poll released Tuesday ahead of the debate found Fetterman leads by just  2 points over Oz, 51% to 49%, down from his 5-point lead in mid-September.