John R. Marquardt
Won the 2026 race for South Dakota Legislative District 18.
- Last margin
- −8.7
- Won 2026
Source: Wikidata, congress-legislators and Open States; 99chambers legislative records
Every race Marquardt has run
Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Marquardt 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 18 | General | Won | Mike Stevens (R), Karen Springer (D) | 26.9% | D+8.7 | $27.9K | R+36.0 |
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Money
Marquardt’s campaign fundraising.
- Raised, 2025–26
- $27.9K
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.
| Friends of John Marquardt State | Active |
Source: South Dakota Secretary of State filings through Oct 20, 2026Updated Nov 1, 2026, 2:15 AM ET
Who Marquardt has run against
- Mike Stevens (R) · 2026 general, won
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)
The seat
- South Dakota Legislative District 18 · lean R+33.2 · 17th most Democratic of 34
Source: 99chambers: presidential results on current lines (MEDSL precinct returns)