Current seat holder: Jamie Isaly (D).
Joshua Congleton (Republican) is a candidate for the Montana House of Representatives in District 58 (Park County) in the November 3, 2026 general election. Joshua Congleton qualified with the Montana Secretary of State to appear on the November 3, 2026 general election ballot for House District 58.
Jamie Isaly (Democratic) is the incumbent member of the Montana House of Representatives representing District 58 (Park County), running for re-election in the November 3, 2026 general election. Official legislative biography notes: Born 1960 in Pittsburgh, Pennsylvania; moved to Montana in 1978; B.S. in industrial art, technology education, Montana State University; teaching degree, Montana State University; retired teacher of 30+ years; currently a small business owner, farm and garden; board member, Livingston Education Foundation; steering committee member, Park County Housing Coalition; advisory board member, Technology Student Association; served in House since 2025; spouse’s name is Traci; three children; six grandchildren.