A Republican North Carolina judge who launched an unprecedented effort to overturn his unofficial loss in a state Supreme Court race is dropping his challenge to the results.

Republican Judge Jefferson Griffin has conceded the North Carolina state Supreme Court election to Democratic Justice Allison Riggs. The decision ends months of legal challenges that prolonged the unresolved North Carolina contest since November.

A Trump-appointed federal judge rejected a bizarre GOP attempt to disenfranchise voters after they cast their ballots.