North Dakota State Senate seat · lines in effect since 2024
North Dakota Legislative District 40
A district of about 10,000 people, 28% of adults with a bachelor's degree. It votes R+38.2 relative to the nation for president.
2024 election
Nov 5, 2024- Jose Castaneda (R) · won97.3%
- Write-ins and other votes (OTH)2.7%
Unopposed.
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 47 seats
Every North Dakota State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
13 races since 1976; the seat changed party 1 time. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2024 | |||
| 2024 | Jose Castaneda (R) | — | Unopposed |
| Lines first used in 2012 | |||
| 2020 | Karen K. Krebsbach (R) | — | Unopposed |
| 2016 | Karen K. Krebsbach (R) | Phil Franklin (D) | 45.2 |
| 2012 | Karen K. Krebsbach (R) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Karen K. Krebsbach (R) | Dianne Giessinger (D) | 11.9 |
| 2004 | Karen K. Krebsbach (R) | Matthew Odermann (D) | 35.4 |
| Lines first used in 1992 | |||
| 2000 | Karen K. Krebsbach (R) | Jennings J. B. Klug (D) | 25.1 |
| 1996 | Karen K. Krebsbach (R) | Jennings J. B. Klug (D) | 19.2 |
| 1992 | Karen K. Krebsbach (R) | Alan Ekblad (D) | 17.5 |
| Lines first used in 1982 | |||
| 1988 | Rolland Redlin (D)Flip | Karen K. Krebsbach (R) | 0.4 |
| 1984 | Chester Reiten (R) | Rolland Redlin (D) | 2.0 |
| Lines first used in 1972 | |||
| 1980 | Rolland Redlin (D) | Chester Reiten (R) | 0.2 |
| 1976 | Rolland Redlin (D) | Chester Reiten (R) | 0.1 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 40
The state's districts in other chambers that share residents with this one, and the share of District 40's area in each.
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2020 | |
|---|---|---|---|
| President | R+36.9 | No race | R+33.5 |
| U.S. Senate | R+61.4 | R+17.8 | No race |
| Governor | No race | No race | R+45.4 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 PM ET
Who lives here, compared
Grey bars show the spread of all 47 seats. Small marks are other seats in North Dakota. The black marker is District 40.
Lower than 61% of seats.
Lower than 52% of seats.
Higher than 87% of seats.
Higher than 87% of seats.
Higher than 50% of seats.
Less dense than 54% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 3835% college gradsR+53.4Not up in 2026District 5
29% college gradsR+40.0Held RDistrict 3
30% college gradsR+49.4Held RDistrict 4
25% college gradsR+33.5Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET