Texas's 18th Congressional District, a Houston-area seat with a strong Democratic tilt (Cook PVI D+25), reflects trader consensus heavily favoring the Democratic Party at 95% following Christian Menefee's landslide 67%-33% victory over Amanda Edwards in the August 13 Democratic runoff primary for the November 5 special election vacancy left by the late Rep. Sheila Jackson Lee. The district delivered 73% for Biden in 2020 and 71% for Jackson Lee in 2022, underscoring entrenched partisan advantages amid limited Republican primary competition. With the special election coinciding with the general election for the full term, early voting underway, and no major polling shifts, traders see scant path for the GOP nominee. Scenarios like a Democratic scandal, nominee withdrawal, or extraordinary turnout could challenge this, but historical base rates suggest resilience.
Experimental AI-generated summary referencing Polymarket data · UpdatedTX-18 House Election Winner
TX-18 House Election Winner
Democratic Party
95%
Republican Party
4%
Democratic Party
95%
Republican Party
4%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Dec 16, 2025, 1:13 PM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Texas's 18th Congressional District, a Houston-area seat with a strong Democratic tilt (Cook PVI D+25), reflects trader consensus heavily favoring the Democratic Party at 95% following Christian Menefee's landslide 67%-33% victory over Amanda Edwards in the August 13 Democratic runoff primary for the November 5 special election vacancy left by the late Rep. Sheila Jackson Lee. The district delivered 73% for Biden in 2020 and 71% for Jackson Lee in 2022, underscoring entrenched partisan advantages amid limited Republican primary competition. With the special election coinciding with the general election for the full term, early voting underway, and no major polling shifts, traders see scant path for the GOP nominee. Scenarios like a Democratic scandal, nominee withdrawal, or extraordinary turnout could challenge this, but historical base rates suggest resilience.
Experimental AI-generated summary referencing Polymarket data · Updated

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