 District I contained the core community of Eagle River, where Dyson resides, and stretched across the northern edge of Anchorage municipal boundaries to Government Hill, also including the core area of Joint Base Elmendorf-Richardson.After being redistricted again in 2012 he declined to run for reelection in 2014 against another incumbent, Anna Fairclough.Dyson formerly served in the Alaska House of Representatives from 1997 to 2003.