FL-19 · House

The district, in brief

Florida's 19th is on a map first used in 2026; the text says nothing about where the new lines run. The incumbent is Republican Byron Donalds, re-elected with 66.3% of the vote in 2024, who is retiring to run for governor. The seat is open.

The Republican nominee is Jim Schwartzel, president of Sun Broadcasting and owner of WFSX-FM, who won a ten-candidate primary with 29.1% (26,153 votes) over Catalina Lauf (22.0%), Jim Oberweis (15.7%) and Madison Cawthorn (8.5%); the text's results table is cut off after Cawthorn. The text notes the primary featured two former members of Congress from other states, Cawthorn (NC-11) and Chris Collins (NY-27), and that Lauf and Oberweis had faced each other in the 2020 Republican primary in Illinois' 14th district. Oberweis self-funded $4,902,096 of $5,326,140 and Collins $2,610,000 of $3,410,000; Schwartzel self-funded $1,000,000 of $2,065,485 and had $181,899 on hand as of July 29, 2026. The Democratic nominee is Victor Arias, who won his primary with 45.5% (15,410 votes) over Howard Sapp (41.1%) and Robert Neeld (13.4%); the text gives no description of him. As of June 30, 2026 Arias had raised $25,798, of which $20,500 was self-funded, with $11,963 on hand. An independent, Seth Haskins, and a write-in, Alexandra Zakhvatayev, are also listed.

Every rater listed calls the seat R: Decision Desk HQ (July 14, 2026), the Cook Political Report (February 6, 2025), Inside Elections (May 5, 2026), Sabato's Crystal Ball (April 10, 2025) and The Economist (May 6, 2026). The text records no general-election poll; its polls are of the Republican primary, the latest Victory Insights, a Republican firm (August 4–6, 2026), with Lauf 19%, Schwartzel 19%, Oberweis 12%.

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 in the middle: the Republican primary results table stops after Cawthorn, and the Democratic primary heading and candidate list are missing, so Victor Arias's background is not given.; The text describes nothing about the new district lines, and gives no presidential results on any lines.; No general-election poll is in the text, and the model's basis says no district polls.; No general-election ratings finer than 'R' are given (no Lean/Likely/Safe).

Read from the district's section of Wikipedia's state page (CC BY-SA), archived as 27e2e54e6981; 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

Byron Donalds (Republican), in this chamber since 2021, 3 terms. Committees: House Committee on Oversight and Government Reform; 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 7.3 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 600,802 adults 25 and over. In 2020 the district voted 38.9% Democratic (two-party) for president. With the same preferences and a 2022-style midterm turnout, it would vote 39.5% Democratic: the midterm electorate alone moves the margin 1.1 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 September 01, 2026; $3,962,663 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 -35.7 to -5.2 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: 2024 presidential lean (R+28.4): 22.2 pts toward the Republican; 2024 House lean: 4.6 pts toward the Republican; asian share (1.7%): 1.3 pts toward the Republican; total outside/party money: 1.0 pts toward the Democrat; wages share income (29.3%): 0.5 pts toward the Republican.

How sure is it, and of what?

Total sd 9.20 points, made of the seat's own volatility 90%, correlated polling error 10%. 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).