Record
TrainedAgronomist — plant science, University of IdahoTwo years a Peace Corps agriculture educator in Thailand
FarmsThree thousand acres of dryland wheat, PomeroyGround her family has worked for three generations
SeatedWashington House, 9th District, since 2015Six counties of wheat, river and range
CarriesRanking Republican, Environment and EnergyOperating and capital budget committees
Moved$126M in state appropriations, session after sessionBraided into $237M committed to the Odessa program
FoundedVoices, 2026Leads it while she serves
Mary Dye.
She has worked the seam between the field and the statute for forty years, and she leads this body from wheat country.
Mary trained as an agronomist — plant science at the University of Idaho — then spent two years as a Peace Corps agriculture educator in Thailand, building wells and water systems for villages that had none, and came home to Pomeroy, where she and her husband Roger run three thousand acres of dryland wheat on ground her family has worked for three generations. The farm doubles as her laboratory: agronomic practice advanced season by season, where snowpack and the cost of moving grain decide the year.
She wrote policy long before she held office, drafting farm-bill provisions from the growers' side of the table in the 1990s. In 2015 she took the 9th District's seat in the Washington House — six counties of wheat, river and range — where she leads Republicans on Environment and Energy, sits on the committees that write the operating and capital budgets, and studied the continental grid end to end through the Legislative Energy Horizon Institute. The seat put her at the junction where the West's systems meet the state's books, and she has worked that junction ever since.
Her signature work moves the money itself. The Odessa groundwater replacement effort had a study and a purpose; it lacked a way to get paid for, year over year, at the scale of canals. She architected that pathway: state capital appropriations carried session after session — $126 million and counting — braided with Reclamation's federal share, USDA watershed commitments, and the districts' own landowner bonds. $237 million committed to date, delivery system by delivery system, first water already on the ground. She also wrote the statute, passed without a dissenting vote, that lets conserved Project water serve more acres.
The rest of her record reads like the platform. Two of the cases just read are hers. She wrote the law that cools the city streets whose runoff warms salmon water, and when the state sited energy projects over its counties' objections, she wrote the amendments that would have given the region a say — vetoed once, and reintroduced since.