TX-34 · House

The district, in brief

Texas's 34th is drawn on new lines for 2026. The text describes it as running from Brownsville in the Rio Grande Valley north along the Gulf Coast to most of Corpus Christi, covering Cameron, Willacy, Kenedy, Kleberg and most of Nueces counties, essentially a recreation of the old 27th district as it stood from 1982 until the 2010 election. On these lines Donald Trump won 54.6% in 2024 and Ted Cruz a 49.7% plurality, after the district went to Clinton in 2016, Biden in 2020 and Obama in 2008 and 2012, and gave Beto O'Rourke 55% in 2018.

The incumbent is Democrat Vicente Gonzalez, re-elected with 51.3% in 2024; his primary challenger Etienne Rosas was eliminated. The Republican nominee is Eric Flores, who won his primary with 56.7% over former U.S. representative Mayra Flores at 23.7%; three withdrawn Republicans endorsed him while staying on the ballot. The text's Republican endorsement list, unlabeled but containing post-primary entries, names Donald Trump, Speaker Mike Johnson, Steve Scalise, Tom Emmer and Greg Abbott. As of June 30, 2026 Gonzalez had raised $3,773,915 with $2,532,412 on hand, Flores $2,874,990 with $686,332 on hand. A Libertarian, Chris Royal, and a Green, Eddie Espinoza, also stand.

Decision Desk HQ (July 14, 2026) and Sabato's Crystal Ball (September 10, 2026) rank the seat D; the Cook Political Report (January 15, 2026) and Inside Elections (August 28, 2025) call it a Tossup; Silver Bulletin's line is blank. Three polls are recorded: Public Policy Research/Texas Southern University (August 18–22, 2026) Gonzalez 45%, Flores 42%; Ragnar Research Partners, a Republican firm polling for Flores (June 14–16, 2026), Flores 44%, Gonzalez 41%; co/efficient, a Republican firm (April 25–29, 2026), Flores 41%, Gonzalez 40%.

A paragraph quoting a model forecast from the day this brief was written is omitted; the current forecast is at the top of this page.

The facts, each beside its sentence

Not in the source: The text is garbled where the Republican nominee is introduced: it gives no background for Eric Flores, and the Democratic primary result table is missing.; The endorsement blocks are not labeled by candidate in the text; which Republican received the Trump/Johnson/Scalise endorsements is inferred from the block's post-primary entries.; Silver Bulletin's ranking is blank in the text.; The three general-election polls appear in the text but are not in the model's basis, which says no district polls.; The text does not give Gonzalez's Democratic primary vote share.

Read from the district's section of Wikipedia's state page (CC BY-SA), archived as efe72be7e14a; written by claude-fable-5-1 (batch reader) on 2026-09-30 and checked mechanically: every quote occurs verbatim in the archived text, every number in the brief occurs in the inputs. No probability here is the reader's.

Who holds the seat now

Vicente Gonzalez (Democrat), in this chamber since 2017, 5 terms. Committees: House Committee on Financial Services.

From the congress-legislators dataset (CC0), archived as ae8cb9477c48. For a Senate race this lists both of the state's senators; the one whose term ends in the election year holds the seat on the ballot. For a House district redrawn for 2026 it is the member elected under the old lines with this number, who may be running elsewhere; the dossier above names who is running here.

How it has voted for president

A shift of 25.2 points toward the Republicans from 2016 to 2024. county returns placed on the current lines by 2020 block population; MEDSL county file (2016), an MIT-licensed county file (2020, checked against certified state results) and MEDSL precinct returns (2024). For a district split across counties this is an estimate, and where the state published the exact 2024 figure for these lines, that exact figure is the one the model uses.

Who are the voters?

Of about 471,962 adults 25 and over. In 2020 the district voted 51.5% Democratic (two-party) for president. With the same preferences and a 2022-style midterm turnout, it would vote 51.6% Democratic: the midterm electorate alone moves the margin 0.2 points toward Democrats. Group shares are estimated from how results vary across the state's census tracts (ecological inference, anchored to Pew's 2020 validated-voter figures) and calibrated to this district's actual 2020 vote; turnout is the Census survey's state rate by race and national rate by education, whose state samples carry margins of several points.

Not answered here: how each group will vote in 2026. These are 2020 preferences; this profile is description, not yet an input to the forecast.

The money

FEC bulk candidate summaries through July 15, 2026; $717,047 of independent expenditures for or against these candidates this cycle (FEC Schedule E, types 24E and 24A), which is the parties' and outside groups' own revealed view of whether this seat is in play.

The district in numbers

ACS 5-year 2023, assembled from census tracts by the 2020 population of their blocks inside the current lines, because the Bureau has not tabulated these lines; medians are population-weighted means of tract medians. Unemployment is the BLS county series placed on the district by block population, not seasonally adjusted, so changes are same-month comparisons. Income, transfers and jobs are BEA county accounts placed the same way, compared with the average district. Every other figure is a named column of a named table in the Bureau's summary file, archived before it was read. This is what a reader knows about a district before looking at a poll; the model does not yet use it, and whether it should is a registered question.

Who is favoured, and by how much?

The 90% interval runs from -4.9 to +25.3 points, D-R. It is wide because this district has never been polled.

What is this built on?

A model trained on every contested House race 2012-2024 predicts this district's lean from its own record: presidential and House results on the current lines, incumbency, both candidates' prior offices, outside and party money before 1 October, demographics and public-assistance shares from the Census release before the election, local unemployment and income, and religious tradition. The national margin comes from presidential approval, the economy, the midterm penalty and the generic ballot corrected for its measured lean. Draws share national and state errors, so the seat total and this district come from the same simulation.

Not answered here: district polls, which are not yet folded in.

Why does the model say this?

Each figure is how far this district's predicted lean moves when that one feature is set to the typical value across 2026 districts, everything else held: PAC money balance: 8.2 pts toward the Democrat; eitc share income (1.0%): 2.2 pts toward the Republican; Democrat's experience (incumbent): 2.0 pts toward the Democrat; outside money balance: 1.7 pts toward the Republican; 2024 House lean: 1.0 pts toward the Democrat.

How sure is it, and of what?

Total sd 9.14 points, made of the seat's own volatility 91%, correlated polling error 9%. The decomposition is stored with the forecast rather than reconstructed, so a probability whose dominant input is a placeholder is visibly that.

Not answered here: a nowcast. 'If ballots were cast today' needs something that observes today, and for a House district nothing does. Publishing the election-day figure under both labels would make one forecast look like two.

How was this number made?

Run 6f211e6f-2bdc-4dda-8f72-81fc628dab0b, house_district_prior/0.2.0, as of 2026-10-02. Promoted by a pre-registered gate: on 2016-2022 its Brier score was 0.036 against 0.049 for the previous method, and on a single 2024 run 0.023 against 0.032 (experiments/district_gate_result.md, with an independent review).