Voter rights groups on Saturday petitioned the Arizona Supreme Court to extend the deadline for voters to fix problems with their mail-in ballots following delays in vote counting and notifying voters about problems.

The ACLU of Arizona is filing a lawsuit to extend the deadline for curing ballots, especially for voters to respond to problems with their mail-in ballot signatures.

The Arizona Supreme Court declined to extend the state’s deadline for voters to fix problems with their mail ballots after finding no evidence of disenfranchisement. The American Civil Liberties Union’s (ACLU) Arizona arm and the Campaign Legal Center raised concerns that thousands of mail ballots won’t be processed until after Sunday’s 5 p.