A group against politicians redrawing voting districts says it has enough signatures to put the issue on November's ballot.
The Committee for Fair Elections says redrawing such boundaries should be done by an independent commission.
The group says it has turned in more than 900,000 signatures. They need 611,000 to put it on the ballot.
Election supervisors say as of Monday night, 580,000 signatures have been certified. The deadline for certification is February 1.
The ballot questioned would ask voters to create a 15-member commission to draw congressional and legislative districts. Members would be selected in a nonpartisan process and wouldn't be able to seek elected office for four years after serving.
Two-thirds of commissioners would have to agree on the districts. If they couldn't agree by a deadline, the Supreme Court would set political boundaries.