They are arguing that there may have been tens of thousands of votes never recorded in the race.
According to a lawsuit filed Friday in Fulton County Superior Court. The Coalition for Good Governance feels that an accurate result in the Nov. 6 election can't be determined because of flaws and malfunctions in the electronic voting system.
It said the large difference in votes for all other statewide races and the low reported participation rate in the lieutenant governor's race also are factors in the lawsuit, which names Secretary of State Robyn Crittenden and the Election Boards of Fulton, Gwinnett and DeKalb counties as defendants.
The declared winner was Forsyth County resident Geoff Duncan, who had 1,951,738 votes to Sarah Riggs Amico's 1,828,566.
The suit seeks a new election for the office and asks that it be conducted on paper ballots read by optical scanners.