This PredictPedia entry covers a Polymarket event titled NM-01 House Election Winner. The contract concerns the U.S. House of Representatives seat for New Mexico's 1st congressional district in the 2026 midterm elections, which the provider says will take place on November 3, 2026 [1]. The event is structured as a party contract. It asks which party will hold the seat rather than which named candidate will win it [1]. The event has two binary markets, one asking whether the Democratic Party wins the seat and one asking whether the Republican Party wins it [1]. Each market has a Yes and a No outcome. Because the two markets address the same seat, each one is a separate contract with its own price snapshot, and the prices should be read as observations at a moment in time rather than executable quotes or verified probabilities. The contract rules define how a party is assigned. A candidate's party is determined by the ballot-listed or otherwise identifiable affiliation at the time all 2026 House elections are conclusively called by the market's resolution sources [1]. A candidate without a ballot-listed affiliation to either major party is treated as a member of one of those parties based on the party with which they most recently expressed their intent to caucus at that same point [1]. The rules therefore do not rely only on the label printed on a ballot. The listed end time for the event is 2026-11-04T04:59:00Z, while the election itself is scheduled for November 3, 2026 [1]. The listed end time is a provider field and should not be read as the date on which the seat will be announced. The rules instead tie resolution to the point when all House elections are conclusively called by the resolution sources [1].

Historical Context

The 2020 United States House of Representatives elections were held on November 3, 2020, to elect representatives from all 435 congressional districts across the 50 states, along with six non-voting delegates and special elections held during 2020 [2]. This background describes the general House election cycle. The supplied sources do not provide historical results or election history for the NM-01 seat, so no claims about past outcomes in that district are made here. A separate Wikipedia list tracks close election results at national and administrative levels, defined as results decided by a margin under 1 vote in 1,000 with at least 1,000 votes cast [3]. That list is background on close races in general and is not linked to this specific contract.

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