Alaska state Sen. Mike Dunleavy announced he will resign his Senate E seat to focus on a campaign for governor.

Had Dunleavy remained in office, he would have been prohibited from campaigning or raising money during the legislative session, which starts January 16. His resignation is effective January 15.

To select Dunleavy’s replacement, the Alaska Republican Party will send 3 names to Governor Bill Walker to choose.

Walker’s choice must then be confirmed by a majority of Republicans in the Alaska Senate.