The August 4, 2026, top-two primary in Washington’s 4th congressional district produced a general-election matchup between Republican Yakima County Commissioner Amanda McKinney and Democrat John Duresky after incumbent Dan Newhouse retired and created an open seat. McKinney’s plurality consolidated Republican support in the reliably conservative district, which encompasses central and eastern Washington including Yakima and the Tri-Cities and has posted consistent Republican margins in recent cycles. Voter registration patterns and historical results continue to constrain Democratic performance, aligning with the Cook Political Report’s Solid Republican rating and the current trader consensus reflected in Polymarket pricing. No major late developments have altered the structural advantages heading into the November general election.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateWA-04 House Election Winner
$50,729 Vol.
$50,729 Vol.
Republican Party
90%
Democratic Party
8%
$50,729 Vol.
$50,729 Vol.
Republican Party
90%
Democratic Party
8%
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/).
Binuksan ang Market: Jan 28, 2026, 11:24 AM ET
Resolver
0x2F5e3684c...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/).
Resolver
0x2F5e3684c...The August 4, 2026, top-two primary in Washington’s 4th congressional district produced a general-election matchup between Republican Yakima County Commissioner Amanda McKinney and Democrat John Duresky after incumbent Dan Newhouse retired and created an open seat. McKinney’s plurality consolidated Republican support in the reliably conservative district, which encompasses central and eastern Washington including Yakima and the Tri-Cities and has posted consistent Republican margins in recent cycles. Voter registration patterns and historical results continue to constrain Democratic performance, aligning with the Cook Political Report’s Solid Republican rating and the current trader consensus reflected in Polymarket pricing. No major late developments have altered the structural advantages heading into the November general election.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update



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