Steve Gunderson
Last held office: Montana House of Representatives, District 1 (2016–2024). Won the 2026 race for Montana Senate District 1.
Last office: Montana House of Representatives, District 1Born 1957
- Last margin
- +51.3
- Won 2026
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:52 PM ET
Career
Offices held, and every time Gunderson was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Every race Gunderson has run
Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Gunderson won voters the party’s presidential nominee did not; primaries have no baseline.
| Year | Office | Stage | Result | Opponents | Share | Margin | Raised | Baseline | Against baseline |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | Montana Senate District 1 | General | Won | Jonathan Russell Jameson (D) | 75.6% | R+51.3 | $16.3K | R+56.1 | |
| 2022 | Montana House of Representatives, District 1 | General | Won | Unopposed | 100% | — | — | — | |
| 2020 | Montana House of Representatives, District 1 | General | Won | Marvin C. Sather (D) | 71% | R+42.1 | — | — | |
| 2018 | Montana House of Representatives, District 1 | General | Won | Donald Coats (D) | 72.9% | R+45.9 | — | — | |
| 2016 | Montana House of Representatives, District 1 | General | Won | Steve Haarstick (D) | 72.5% | R+45.0 | — | — |
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $16.3K
- Spent
- $12K
Source: Montana Commissioner of Political Practices filings through Sep 29, 2026Updated Nov 1, 2026, 9:16 AM ET
Campaign committees
Open committees can still raise and spend money.
| Gunderson, Steve State | Active |
Source: Montana Commissioner of Political Practices filings through Sep 29, 2026Updated Nov 1, 2026, 9:16 AM ET
Seats Gunderson has held
- Montana House of Representatives, District 1 · 2016–2024
Source: 99chambers results archive
Who Gunderson has run against
- Jonathan Russell Jameson (D) · 2026 general, won
- Marvin C. Sather (D) · 2020 election, won
- Donald Coats (D) · 2018 election, won
- Steve Haarstick (D) · 2016 election, won
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)
How we know Gunderson
One person, matched across every source we use.
- Wikidata Q39079108
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:52 PM ET