PolymarketResolvedOutcome: NoClosed Part of Dem sweep & Democrat wins 2028 presidency? →

Will the Democrats fail to sweep the House and Senate and a Democrat win the 2028 presidential election?

Outcome

No

Polymarket resolved this market to No.

Final No price before close >99¢
Known at
$1.1K total volume

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7 days before close
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Midpoint prices known at each point; implied probability in cents. Times in UTC.

Low gotcha risk

Gotcha risk at close — resolution-rule assessment

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This market combines two distinct electoral outcomes: the 2026 congressional midterms and the 2028 presidential race. The rules provide highly detailed, unambiguous definitions for what constitutes chamber control, including edge cases such as runoffs, independent caucusing decisions, vacancies, ties, and post-election party switches. The presidential component relies on a specific consensus of three named media outlets (Associated Press, Fox News, and NBC) or the official inauguration on January 20, 2029, as a hard backstop. Timing risk is moderate simply because the market spans several years and resolves only after all components conclude, but the criteria and fallback mechanisms are clearly defined throughout.

Wording ambiguity
Low
Source discretion
Low
Timing risk
Med
Exceptional clauses
Low

AI-generated before close · google/gemini-3.7-flash ·

Price history range

Price path to close

No price
80¢85¢90¢95¢100¢20:0003:4011:2019:00
70¢80¢90¢100¢Nov 3Nov 3Nov 4Nov 4
85¢90¢95¢100¢Nov 4Nov 4Nov 4Nov 4

Why it moved before close

No moves were explained in the 7 days before close.

Market explained before close

This market measures whether the Democratic Party fails to win control of both the US House and Senate in the 2026 midterm elections and subsequently wins the 2028 US presidential election.

How it resolves

The market resolves to Yes if the Democratic Party does not win control of at least one congressional chamber (House or Senate) in the 2026 midterm elections, and the Democratic Party candidate wins the 2028 presidential election. The market resolves to No if the Democrats sweep both chambers in 2026, or if the Democratic candidate loses the 2028 presidential election. Chamber control is determined by seat majorities, tie-breaking rules (the Vice Presidency or first selected President Pro Tempore for the Senate; first elected Speaker for the House), and party caucusing rules. The 2028 presidential winner is determined once the Associated Press, Fox News, and NBC all call the race for the same party, or by the candidate inaugurated on January 20, 2029 if no consensus call is reached. Congressional control is decided by official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.

Key dates

  • Cutoff for scheduled November Senate elections: — Date used to determine scheduled regular and special Senate elections.
  • Independent caucus declaration deadline: — Deadline at 11:59 PM ET for independent members to announce caucus intent.
  • 2028 presidential election: — Scheduled date of the 2028 US presidential election.
  • Presidential inauguration fallback date: — Determines the presidential component if media calls are not unified.

Resolution source

Associated Press, Fox News, NBC, official information from state electoral authorities, the United States Congress, and a consensus of credible reporting

AI-generated before close · google/gemini-3.7-flash ·

Resolution rules at close

This market will resolve according to the combined outcome of (1) whether the Democratic Party wins control of both the United States House of Representatives and the United States Senate in the 2026 United States midterm election and (2) whether the Democratic Party’s candidate wins the 2028 United States presidential election. Options beginning "Dem sweep" require the Democratic Party to win control of both chambers. Options beginning "No Dem sweep" require the Democratic Party not to win control of at least one of the two chambers. Each option then names the result of the second component ("Dem wins 2028" or "Dem loses 2028"), as defined below. The option matching both results will resolve to "Yes", and all other options will resolve to "No". 2028 presidential election: This component is "Dem wins 2028" if the candidate of the Democratic Party is elected President of the United States in the 2028 United States presidential election, scheduled for Tuesday, November 7, 2028. Otherwise, it is "Dem loses 2028". This component will be determined once the Associated Press, Fox News, and NBC all call the race for the same party. If all three sources haven’t called the race for the same party by the inauguration date (January 20, 2029), this component will be determined by the party of the candidate who is inaugurated. House and Senate control: A party wins control of the United States Senate if it wins a majority of the chamber’s voting seats. If no party wins a majority of voting seats, the party that wins control of the chamber is the party that wins half of the voting seats and holds the Vice Presidency. If the outcome remains ambiguous after applying the above criteria, the chamber will be deemed controlled by the party with which the first selected President Pro Tempore of the Congress that convenes after the 2026 midterm election is affiliated. A party wins control of the United States House of Representatives if it wins a majority of the chamber’s voting seats. If no party wins a majority of voting seats, the chamber will be deemed controlled by the party with which the first elected Speaker of the House of the Congress that convenes after the 2026 midterm election is affiliated. The following rules govern the counting of seats for determining which party wins control of the chambers. For determining Senate control, all regular and special Senate elections that determine representation in the upcoming 120th Congress and are scheduled to take place in November 2026 as of October 31, 2026 are included. Vacant Senate seats for which no election or special election to fill the seat is scheduled to take place in November 2026 as of October 31, 2026 will be treated as held by the party affiliation of the most recent member to hold that seat. For determining House control, all House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress are included. Where a Senate or House seat is decided by a runoff, the runoff result will determine attribution of that seat, even if it takes place after November 2026. For seats contested in the 2026 midterm election, seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation, or vacates their seat, between election day and the formal organization of Congress, the seat is attributed to the party under which the member was elected. For seats not contested in the 2026 midterm election, seats are attributed to the party that holds the seat as of the date of the 2026 midterm election. If a current sitting member of the U.S. Senate who is not up for election changes party affiliation or vacates their seat after the date of the 2026 midterm election, the seat is attributed to the party under which the member was affiliated at the time of the 2026 midterm election. Senate and House members elected as independents who formally caucus with, or, for newly elected members, who announce their intent to caucus with, a party are included in that party’s count. If the caucus decisions of members of the Senate or House elected as independents cannot be determined on the date of the 2026 midterm election, this component may remain undetermined until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party. The resolution sources for the House and Senate component will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.

About this page

A record of how this market resolved. The prices, analysis and rules shown here come from data Brierpoint captured or generated before close.