JUNEAU, Alaska (AP) — Political parties “have no right to be gatekeepers to the ballot,’’ an attorney argued Tuesday in urging the Alaska Supreme Court to uphold a voter-approved electoral system that would end party primaries in the state and institute ranked-choice voting in general elections.

Scott Kendall, who helped write the ballot measure, argued on behalf of the group behind the initiative, which narrowly passed in 2020. Laura Fox, an attorney for the state, joined Kendall in asking that the court uphold a lower court ruling in favor of the new system.

The system is unique among states...