AUGUSTA (AP) — The Maine State Senate voted 22 to 12 Monday to pass an order contesting Secretary of State Matt Dunlap’s authority to implement a ranked-choice voting law.

Republican Senate President Michael Thibodeau claims the order is designed to provide legal clarity prior to the June primary.

Ranked-choice voting supporters say the order is too expansive and allows the Senate to sue the secretary of state.

The ranked-choice system is designed to let voters rank their ballot choices from first to last in a system. Mainers approved the new voting concept in a statewide referendum last year but state lawmakers delayed its implementation.

A Superior Court judge is expected to rule this week on an injunction concerning implementation of the law.

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