Democratic Associate Justice Allison Riggs has told supporters at a rally that she will fight as long as it takes while awaiting a final decision in North Carolina's unresolved Supreme Court race.

Democratic Justice Allison Riggs won her November election by 734 votes, but the court put into play enough votes to possibly hand the seat to her Republican challenger.

The number of ballots in question exceeds the slim margin by which the Democratic incumbent won, potentially leading to the November election being overturned.