New Mexico State Senate seat · lines in effect since 2022
New Mexico Senate District 21
A district of about 56,000 people, 27% Hispanic, 58% of adults with a bachelor's degree. It votes D+7.9 relative to the nation for president.
2024 election
Nov 5, 2024- Nicole Tobiassen (R) · won52.8%
- Athena Ann Christodoulou (D)47.2%
Source: New Mexico Secretary of StateUpdated Oct 1, 2026, 6:08 AM ET
Where it sits among all 42 seats
Every New Mexico 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
15 races since 1970. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2024 | Nicole Tobiassen (R) | Athena Ann Christodoulou (D) | 5.6 |
| Lines first used in 2012 | |||
| 2020 | Mark David Moores (R) | Athena Ann Christodoulou (D) | 6.4 |
| 2016 | Mark David Moores (R) | Gregory B. Frazier (D) | 12.2 |
| 2012 | Mark David Moores (R) | Lisa K. Curtis (D) | 13.3 |
| Lines first used in 2002 | |||
| 2008 | Kent L. Cravens (R) | Jessica Lynn Wolfe (D) | 13.9 |
| 2004 | Kent L. Cravens (R) | — | Unopposed |
| Lines first used in 1992 | |||
| 2000 | Kent L. Cravens (R) | — | Unopposed |
| 1996 | William F. Davis (R) | Anita Miller (D) | 12.8 |
| 1992 | Tom C. Wray (R) | — | Unopposed |
| Lines first used in 1982 | |||
| 1988 | Victor R. Marshall (R) | — | Unopposed |
| 1984 | Victor R. Marshall (R) | Eli P. Chavez (D) | 50.0 |
| Lines first used in 1972 | |||
| 1980 | Joseph H. Mercer (R) | — | Unopposed |
| 1976 | Joseph H. Mercer (R) | — | Unopposed |
| 1972 | Fred A. Gross Jr. (R) | Robert N. Singer (D) | 34.6 |
| Lines first used in 1962 | |||
| 1970 | Robert E. Ferguson (D) | — | Unopposed |
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 21
The state's districts in other chambers that share residents with this one, and the share of District 21's area in each.
- U.S. House
- NM-1 100%
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+5.2 | No race | No race |
| U.S. Senate | No race | D+10.9 | R+6.3 |
| Governor | No race | R+2.5 | No race |
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 42 seats. Small marks are other seats in New Mexico. The black marker is District 21.
Higher than 98% of seats.
Lower than 51% of seats.
Lower than 90% of seats.
Lower than 61% of seats.
Highest of 42 seats.
Denser than 85% 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 1836% Hispanic · 44% college gradsD+22.2Not up in 2026District 37
53% Hispanic · 48% college gradsD+15.7Not up in 2026District 23
52% Hispanic · 40% college gradsD+12.7Not up in 2026District 16
37% Hispanic · 47% college gradsD+55.5Not 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