Polymarket
KalshiTX-23 Is Priced on the District's Party Line Now That the Incumbent's Cushion Is Gone
TX-23 House race odds price a seat that has had no member since April 14, 2026, the date the Clerk of the House gives for Tony Gonzales's resignation, and the market treats the Republican Party as the favourite on the district's own party line rather than on either nominee. Texas voters fill the seat on November 3, 2026 in an open race: the Secretary of State's general-election list names Brandon Herrera for the Republican Party, Katy Padilla Stout for the Democratic Party and Ben Mendoza as an independent, and no special election for the vacancy appears among the state's 2026 elections. The live board above shows how wide the Republican edge is; the sections below argue why it sits there and what would move it.
What the TX-23 price is saying
Start with the map, because the price does. The seat on the 2026 ballot is drawn under PlanC2333, the congressional plan the 89th Legislature enacted in its second called session of 2025, which the Texas Legislative Council lists as the plan in effect for the 2026 elections. The council's population report for the plan, dated August 18, 2025, puts 24 counties in TX-23 whole: Brewster, Crane, Crockett, Culberson, Edwards, Frio, Hudspeth, Jeff Davis, Kinney, Loving, Medina, Pecos, Presidio, Reagan, Reeves, Schleicher, Sutton, Terrell, Upton, Uvalde, Val Verde, Ward, Winkler and Zavala. It adds 79% of Maverick County, 11% of El Paso County and 19% of Bexar County, and the Bexar piece alone holds 373,532 of the district's 766,987 residents. Nearly half the people the seat represents live on the San Antonio end of it, and the other half are spread across 26 counties to the west, which is why a TX-23 campaign is two campaigns at once.
Then the vote inside those lines. The council's analysis of the November 5, 2024 general election within PlanC2333 gives the Republican presidential ticket 56.8% of the vote to 42.0% for the Democratic ticket, the Republican Senate nominee 52.9% of the vote to 44.7%, and the Republican railroad commission nominee 55.0% of the vote to 39.0%, on 534,647 registered voters and 321,023 ballots cast. That is the structural read in one line: a seat that every 2024 statewide Republican carried, by margins of roughly eight to seventeen points, is priced as a Republican hold before anyone asks who the nominees are. The price is not a verdict on Herrera against Stout. It is a judgement on whether a midterm electorate in this district behaves like the 2024 one.
The redraw did not build this lean; it inherited it. Under the previous plan, PlanC2193, the district held all of Maverick County, Dimmit and La Salle counties and 17% of Bexar County, and the same November 5, 2024 vote within those older lines gave the Republican presidential ticket 57.2% of the vote and the Republican Senate nominee 53.2% of the vote. The 2025 map dropped Dimmit and La Salle, moved about a fifth of Maverick County into another district and enlarged the Bexar piece from 346,094 to 373,532 people. The Hispanic share of the district's population fell from 62.9% to 59.7% on the 2020 Census counts, and the Republican presidential share fell by less than half a point. The line moved; the partisan baseline barely did, so the map is not the variable this price is waiting on.
What the price takes away is the incumbent. Gonzales won the seat on November 5, 2024 with 62.3% of the vote to 37.7% for his Democratic opponent, per the Secretary of State's results, which put him about five points ahead of the Republican presidential ticket on the same lines. That cushion left the ballot in two steps. In the March 3, 2026 Republican primary, held on the new lines, Herrera led with 23,932 votes, 43.3% of the total, to 23,073 for Gonzales at 41.8%, which sent both to a runoff. The Secretary of State's results for the May 26, 2026 Republican runoff carry no TX-23 race, Ballotpedia records that runoff as canceled after Gonzales withdrew, and the state's general-election list names Herrera as the Republican nominee. The market treats the Republican side as a party-line favourite without the personal vote that built the 2024 margin, which is why the price leans Republican without leaning as far as the presidential result would on its own.
The Democratic side settled earlier. Stout won the March 3, 2026 Democratic primary outright with 30,828 votes, 52.1% of the total, ahead of Santos Limon, Bruce Richardson and Gretel Enck, so she has been the nominee since primary night. Mendoza, listed as a mediator with an El Paso address, filed on June 25, 2026 and is the only other name the Secretary of State lists for the seat.
The outside reads agree with the direction. Ballotpedia's weekly table shows the Cook Political Report, Decision Desk, Inside Elections and Sabato's Crystal Ball all rating the seat Likely Republican on October 13, 2026, as they had on each of the three weekly dates before it. Federal Election Commission filings compiled by Ballotpedia show Herrera with $1.94M raised and $309.0K on hand through June 30, 2026, against $484.9K raised and $171.4K on hand for Stout. A nominee with four Likely ratings and about four times the money is priced as the favourite, not as a certainty, because the electorate that decides a Texas midterm is a smaller one than the 2024 baseline describes.
The case against the TX-23 read
The strongest case against the read is that the 2024 baseline flatters the Republican side in a midterm. On the 2026 lines the Republican Senate nominee won by just over eight points on November 5, 2024, roughly half the presidential margin, which says a real share of the district's voters split their tickets and could split them again for an open House seat. The midterm electorate is also a different size: within the same PlanC2333 lines, 223,915 ballots were cast in the 2022 general election against 321,023 in 2024, a turnout of 45.3% of registration against 60.0%, and which side's voters stay home is the question a midterm here turns on. The primary electorate leaned the other way from the general one: 59,222 votes were cast in the March 3, 2026 Democratic primary for the seat against 55,263 in the Republican primary. And the district has had no member in the House since April 14, 2026, with its Republican nominee chosen by a withdrawal rather than a runoff. A reader who holds this view sees a district one good Democratic year away from a Senate-race result, and a price that leans on presidential numbers.
The case also runs the other way. Every statewide Republican on the 2024 ballot carried these lines, the four raters have not moved off Likely Republican, and the Republican nominee holds the larger campaign account; a reader on that side treats the vacancy and the primary as noise that says nothing about November.
What changes the TX-23 read
The read is wrong if the November electorate in TX-23 looks more like the 2024 Senate race than the presidential one. The dated tests, in order:
• Early voting, October 19 to October 30, 2026: in-person early voting runs on those dates statewide; county totals are the first hard evidence of who is voting, read with care because Bexar, El Paso and Maverick counties are split between TX-23 and other districts.
• Campaign reports, October 15 and October 22, 2026: the October quarterly reports, with books closed September 30, are due October 15, and the pre-general reports, with books closed October 14, are due October 22, per the Federal Election Commission; a Democratic quarter that narrows the four-to-one gap would test the money side of the read.
• Rating changes: the four raters held the seat at Likely Republican from September 22 through October 13, 2026; a move to Lean Republican by any of them would say the outside reads see the Senate baseline rather than the presidential one.
• Election night, November 3, 2026: a consensus media projection lets Kalshi settle early, and mail ballots postmarked by 7 p.m. that day still count if they arrive by 5 p.m. on November 4, 2026, so a race inside a point may not be called that night.
When the TX-23 market resolves
Both venues price the party, not the person, and both settle off the November 3, 2026 general election, on different clocks. Kalshi's KXHOUSERACE-TX23-26 contracts pay Yes if the House member sworn in for TX-23 for the term beginning in 2027 is a member of the named party; Kalshi may settle early once a consensus of media organizations projects the winner, expects settlement on January 4, 2027 and lists November 3, 2027 as the latest expiration. Polymarket's TX-23 House Election Winner contracts pay on the party of the candidate who wins the seat, judged by ballot-listed affiliation when all 2026 House elections are conclusively called, on a consensus of credible reporting, with the Federal Election Commission's official results as the fallback where reporting is ambiguous. An independent winner is the one place the two part: Polymarket assigns a winner with no Democratic or Republican ballot label to the party that winner most recently said they would caucus with, while Kalshi's rule reads party membership. Because the Secretary of State's list of 2026 elections carries no special election for the vacancy, the member Kalshi waits for is the one Texas voters elect on November 3.
Related Texas markets beyond TX-23
TX-23 shares Bexar County with TX-21, which takes 17% of the county under the same plan so the two seats draw on voters from the same county. Two other Hispanic-majority seats priced on the site are TX-28 and TX-15, where Spanish-surname voters make up a far larger share of registration than in TX-23 and the 2024 baseline reads differently. The same November 3, 2026 ballot carries the Texas Senate race and the governor's race, whose turnout sets the electorate TX-23 is decided by. Every Texas race the site prices is on the elections page, and the wider desk is on the politics hub.
