Upset Brief · TX-28 · Tano E. Tijerina (R) vs. Henry Cuellar (D), incumbent
Tijerina can win. The math closes using 15 percent of what history allows.
37%
odds today
51%
odds with the plan
2,378
net votes to find
37
days left; voting starts October 19
Where
- 01+207Precinct 6 (Starr County)Starting line Cuellar +11. 11.8% split their ticket.
- 02+197Precinct 130 (Webb County)Starting line Cuellar +19. 11.4% split their ticket.
- 03+172Precinct 8 (Starr County)Starting line Tijerina +6. 11.1% split their ticket.
- 04+120Precinct 3 (Zapata County)Starting line Tijerina +17. 12.9% split their ticket.
- 05+119Precinct 9 (Starr County)Starting line even. 12.0% split their ticket.
- 06+118Precinct 2 (Zapata County)Starting line Tijerina +10. 13.9% split their ticket.
The top 12 precincts carry 62% of the plan.
How
- P+2,232PersuadeTicket splitters and the 15 percent still undecided in the latest poll: 14,687 leaning Cuellar today.
- M+177MobilizeAt least 9,037 people who voted in 2024 but not in 2022, in precincts where Tijerina's side wins at least 55 percent.
- C+88ConsolidateVoters who went third party in recent races, in the precincts that lean Tijerina's way.
What has to be true
- Tijerina wins 8 percent of the ticket splitters and undecided voters now leaning Cuellar.
- No national wave is required. The plan closes at 15 percent of what recent Texas results show is possible.
- The starting line comes from published 2026 polls, including campaign or party sponsored polls where those are the only ones; if the true gap is different, so is the plan.
The numbers behind it
- 01Crossover regression268 precincts, R² 0.956, 55 crossover precincts identified
- 02Monte Carlo20,000 seeded simulated elections with a 5-point baseline error. 90% range of the final margin with the plan: -11,447 to 11,785 votes.
- 03Money, FEC candidate totals through June 30Tijerina $768,188 cash on hand; Cuellar $1,129,604.
- 04Call program for this list3,703 households, 11,109 dials, about 582 live conversations: an estimated $2,113 at published rates.
Independent analysis by The Political Group from official Texas Secretary of State precinct returns (2022 and 2024), FEC filings and published polls, as of September 26, 2026. Not affiliated with any candidate or party.