← Who holds officeMontanaSteve DainesU.S. Senator from MontanaRepublicanPartyRepublicanOfficeU.S. Senator from MontanaIn this chamber since2015Current term endsJanuary 2027Official websitedaines.senate.govPhone202-224-2651Washington office320 Hart Senate Office Building Washington DC 20510Official portrait: U.S. Government Publishing Office, public domain. Service record: the public congress-legislators dataset.