JUNEAU, Alaska — Democratic Senate candidate Mary Peltola’s campaign sued Alaska election officials Friday for records on rejected absentee ballots. The case comes as Alaska continues to count votes in a Senate race where the unofficial tally puts Peltola narrowly ahead of Republican Sen. Dan Sullivan.

The campaign says it asked election offices for a register showing which returned absentee ballots were rejected and why. It is asking the court to order release of the information. Alaska’s Department of Law said the state treats the preliminary records as confidential and disputes that it must release them.

The unofficial count released Wednesday showed Peltola with 102,962 first-choice votes and Sullivan with 102,325, a difference of 637. More ballots remain to be counted, with another update expected Tuesday. Alaska’s ranked-choice process could also affect the final result.

The records suit is separate from federal litigation over certification of the Senate result. Alaska’s Senate and governor’s races remained undecided on Sunday.