One thing is for certain. A teenage singer from the South will be the next "American Idol." The question is which one: Sixteen-year-old Diana DeGarmo of Snellville, Ga., or 19-year-old Fantasia Barrino of High Point, N.C.

Both performed three songs each Tuesday night before a live, nationally televised audience in Los Angeles, and the phone lines were to be open for four hours - twice as long as usual - to give fans plenty of time to cast their votes.

Viewing parties were held in their home states, including one in the Georgia governor's mansion in Atlanta.

Gov. Sonny Perdue declared Tuesday "Dial for Diana DeGarmo Day" in Georgia. He asked all Georgians to show support for DeGarmo by watching her on the Fox singing competition and voting for her by phone. The proclamation was accompanied by detailed instructions on how viewers can call in for DeGarmo.

Perdue hosted about 350 friends, neighbors and family members of DeGarmo to watch the vocal showdown on two widescreen TVs at the Governor's Mansion.

With the crowd gathered around, Perdue talked to DeGarmo on the phone after the show and told her he hopes she wins despite the remarks of judge Simon Cowell.