JUNEAU (AP) — The Alaska Supreme Court has upheld a voter-approved election system that ends party primaries in the state and institutes ranked-choice voting in general elections.

A brief order on Jan. 19 affirmed a lower court ruling from last year. A fuller opinion explaining the Supreme Court’s decision was expected later.

The ruling comes one day after the justices heard arguments in the case.

The new system, narrowly approved by voters in 2020, is unique among states and will be used for this year’s elections. It is viewed by supporters as a way to encourage civility and cooperat...