Aaron Matson
Ran for South Dakota Legislative District 11 in 2026; the count goes on.
- Last margin
- −24.7
- Lost 2018
Source: Wikidata, congress-legislators and Open States; 99chambers legislative records
Every race Matson has run
Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Matson 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 | South Dakota Legislative District 11 | General | Counting | Chris Karr (R) | 49.8% | R+0.4 | $20.3K | R+9.6 | |
| 2018 | South Dakota Treasurer | General | Lost | Josh Haeder (R) | 37.6% | R+24.7 | — | — |
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Money
Matson’s campaign fundraising.
- Raised, 2025–26
- $20.3K
Source: South Dakota Secretary of State filings through Oct 20, 2026Updated Nov 1, 2026, 2:15 AM ET
What’s next
From campaign filings, not from public statements.
| Aaron for 11 State | Active |
Source: South Dakota Secretary of State filings through Oct 20, 2026Updated Nov 1, 2026, 2:15 AM ET
Who Matson has run against
- Chris Karr (R) · 2026 general
- Josh Haeder (R) · 2018 election, lost
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)
The seat
- South Dakota Legislative District 11 · lean R+9.5 · 7th most Democratic of 32
Source: 99chambers: presidential results on current lines (MEDSL precinct returns)