Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Texas › U.S. House of Representatives · November 3, 2026 · Updated Oct 16, 2026

Texas's 21st District

Teixeira is clearly favored to win: Teixeira wins in 19 of every 20 simulations.

Hook (D)
6%
chance of winning
Teixeira (R)
94%
Average margin
R+11.0
80% of outcomes
R+20 to R+2
Partisan lean
R+20
Polls
No pollsmodel only

Teixeira is clearly favored to win: Teixeira wins in 9 of every 10 simulations.

Hook (D)
9%
chance of winning
Teixeira (R)
91%
Average margin
R+12.3
80% of outcomes
R+24 to R+1
Partisan lean
R+20
Polls
No pollsmodel only

Range of outcomes

Final margin across our simulations; the white dashes mark the middle 80%.

R+11.0R+30R+20R+10EvenD+10D+20D+30
R+12.3R+40R+20EvenD+20D+40

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Hook 6%Teixeira 94%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

0%25%50%75%100%AugSepOctNovNov 3Hook 9%Teixeira 91%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

The candidates

Democratic

Kristin Hook

Scientist and nominee for this district in 2024

Experience
No elected office
Raised
$369.2K
From individuals
$361.1K
Spent
$259.5K
Cash on hand
$114.1K

Money: FEC, through Sep 30, 2026.

Profile and career

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast; federal races run in it
Swing reaching this office
78%Of a shift in the environment, from past House races since 2016
Southwest adjustment
−1.2How House races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 78% of the environment andthe Southwest adjustmentR+12.5Fundamentals modelAdds incumbency, past results, money andexperienceR+11.1Polls in similar placesPolling of similar races in Texas and look-alikeplacesR+10.9Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayR+11.0Pulse forecastPolls (and polling of similar places) only, todayR+12.3

Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.

Fundamentals inputs
Incumbency (+1 D, −1 R)0
Fundraising edge (log ratio of individual money)-0.65
Elected-experience edge0
First-term incumbent0
Seat's last result vs. expectation0
Incumbent's last result vs. expectation0

Polls

No public polls of this race. The forecast relies on fundamentals and on polling of similar places.

The district

Lean R+20: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentR+21.6R+23.9 vs. nation2020 presidentR+14.9R+19.4 vs. nation2024 presidentR+22.2R+20.7 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
801,990
People per km²
50
Adults with a B.A.+
44%
White, no degree
30%of adults
  • White 54%
  • Hispanic 36%
  • Black 4%
  • Asian 3%
  • Other / multiracial 4%

American Community Survey 2020–2024, aggregated from census tracts.

Past results

Results in the same-numbered district; earlier elections may have used different lines.

2024 Earlier district lines

426,422 votes · R+26.3
✓ Chip Roy (R)61.9%
Kristin Hook (D)36.1%
Bob King (L)2.1%

2024 President Vote in this district

408,190 two-party votes · R+22.2 · R+20.7 vs. the nation
✓ Donald Trump (R)61.1%
Kamala Harris (D)38.9%

2022 Earlier district lines

330,081 votes · R+25.7
✓ Chip Roy (R)62.8%
Claudia Andreana Zapata (D)37.2%

2020 Earlier district lines

453,751 votes · R+6.8
✓ Chip Roy (R)52.0%
Wendy R Davis (D)45.4%
Arthur Dibianca (L)1.9%
Tommy Wakely (G)0.8%

2020 President Vote in this district

436,331 two-party votes · R+14.9 · R+19.4 vs. the nation
✓ Donald Trump (R)57.4%
Joe Biden (D)42.6%

2018 Earlier district lines

353,361 votes · R+2.7
✓ Chip Roy (R)50.2%
Joseph Kopser (D)47.6%
Lee Santos (L)2.1%

2016 Earlier district lines

356,031 votes · R+22.0
✓ Lamar Smith (R)57.0%
Tom Wakely (D)36.4%
Mark Loewe (L)4.1%
Antonio "tony" Diaz (G)2.4%

2016 President Vote in this district

360,181 two-party votes · R+21.6 · R+23.9 vs. the nation
✓ Donald Trump (R)60.8%
Hillary Clinton (D)39.2%