AZ-08 House winner? (2028): Republican party 91% ▲ 91AZ-09 House winner? (2028): Republican party 82% ▲ 82New Zealand general election winner: National 37% ▼ 61Big Bash League, Women: Sydney Sixers vs Syd… 9% ▼ 41Abu Dhabi T10 League: United Tigers vs Arabi… 9% ▼ 41Peak traffic through the Strait of Hormuz? (… 92% ▲ 39College Football Playoff Qualifiers: Ohio St. 14% ▼ 37Test Match: Afghanistan vs Zimbabwe: Draw 72% ▲ 24Will Pete Hegseth be impeached: Before Apr 1… 82% ▲ 23Brazilian Grand Prix: Driver Winner: Max Ver… 13% ▼ 23"Avengers: Doomsday" Opening Weekend Box Off… 57% ▲ 22ATP Paris Winner: Carlos Alcaraz 78% ▲ 21Pete Hegseth impeached by...: March 31, 2027 78% ▲ 20How much will Anthropic raise in its IPO: $6… 44% ▲ 20Pete Hegseth impeached by...: December 31, 2… 62% ▲ 20NCAA Football: 2026 Heisman Award Winner: CJ… 32% ▲ 19Heisman Trophy Winner: CJ Carr 34% ▲ 18Jonathan Taylor Next Team: New York G 32% ▼ 18Who will receive the second mandate to form … 57% ▲ 18Khamenei # posts November 3 - November 10, 2… 84% ▲ 17NCAA Football: 2026 Heisman Award Winner: Je… 21% ▼ 17College Football Playoff Qualifiers: Texas 73% ▲ 17Vincent van Gogh's “Châtaigniers en fleurs” … 30% ▲ 17What will Trump say during 60 Minutes: Midterm 74% ▼ 16AZ-08 House winner? (2028): Republican party 91% ▲ 91AZ-09 House winner? (2028): Republican party 82% ▲ 82New Zealand general election winner: National 37% ▼ 61Big Bash League, Women: Sydney Sixers vs Syd… 9% ▼ 41Abu Dhabi T10 League: United Tigers vs Arabi… 9% ▼ 41Peak traffic through the Strait of Hormuz? (… 92% ▲ 39College Football Playoff Qualifiers: Ohio St. 14% ▼ 37Test Match: Afghanistan vs Zimbabwe: Draw 72% ▲ 24Will Pete Hegseth be impeached: Before Apr 1… 82% ▲ 23Brazilian Grand Prix: Driver Winner: Max Ver… 13% ▼ 23"Avengers: Doomsday" Opening Weekend Box Off… 57% ▲ 22ATP Paris Winner: Carlos Alcaraz 78% ▲ 21Pete Hegseth impeached by...: March 31, 2027 78% ▲ 20How much will Anthropic raise in its IPO: $6… 44% ▲ 20Pete Hegseth impeached by...: December 31, 2… 62% ▲ 20NCAA Football: 2026 Heisman Award Winner: CJ… 32% ▲ 19Heisman Trophy Winner: CJ Carr 34% ▲ 18Jonathan Taylor Next Team: New York G 32% ▼ 18Who will receive the second mandate to form … 57% ▲ 18Khamenei # posts November 3 - November 10, 2… 84% ▲ 17NCAA Football: 2026 Heisman Award Winner: Je… 21% ▼ 17College Football Playoff Qualifiers: Texas 73% ▲ 17Vincent van Gogh's “Châtaigniers en fleurs” … 30% ▲ 17What will Trump say during 60 Minutes: Midterm 74% ▼ 16

Dem sweep & US-Iran ceasefire through 2027 Odds

This market has resolved: Dem sweep; Ceasefire broken. Final prices are below.

Polymarket Volume $114K Ended Jan 1, 2028 Updated Nov 8, 5:30 AM EST
OutcomeChanceOdds24h
Dem sweep; Ceasefire broken ✓
100% — ▲ 1
Dem sweep; Ceasefire holds
0% — ▼ 1
No Dem sweep; Ceasefire holds
0% — ▼ 1
No Dem sweep; Ceasefire broken
0% — ▼ 16

Price history

0% 25% 50% 75% 100% Nov 2 Nov 6
Dem sweep; Ceasefire brokenDem sweep; Ceasefire holdsNo Dem sweep; Ceasefire holdsNo Dem sweep; Ceasefire broken

Resolution rules

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 United States refrains from a qualifying military action against Iran through the end of 2027. 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 ("Ceasefire holds" or "Ceasefire broken"), as defined below. The option matching both results will resolve to "Yes", and all other options will resolve to "No". US-Iran ceasefire: This component is "Ceasefire broken" if the United States takes a qualifying military action against Iran between market creation and December 31, 2027, 11:59 PM Iran Standard Time. Otherwise, it is "Ceasefire holds". A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by the United States, that directly impacts Iran. An air strike includes bombs, air-to-surface missiles, and air-launched drones. A surface-to-surface missile strike includes one-way attack drones and surface-to-surface missiles such as cruise or ballistic missiles. The following actions do not constitute a qualifying military action: munitions destroyed or intercepted before impact; surface-to-air missile strikes; small-arms fire; ground incursions; cyber operations; naval gunfire and artillery fire; howitzers, artillery pieces, mortars, and rocket artillery (e.g. MLRS systems); minor surface-to-surface strikes, including short range loitering munitions, FPV drones, and ATGM strikes; any threat, authorization, or announcement of force that has not been executed. Any munition that is intercepted or destroyed before impact does not constitute a qualifying military action. Debris, fragments, or any wreckage from intercepted munitions that land on Iran do not constitute a military action regardless of any damage incurred. “Iran” refers to the terrestrial territory of Iran, including its internal waters. Iran’s maritime territory and airspace are not encompassed. Where territorial borders are disputed, all territory claimed by and under the de facto control of Iran as of market creation will qualify. The occurrence, attribution, and timing of a qualifying military action will be primarily determined based on a consensus of information available from the resolution sources. Where multiple sources conflict regarding the occurrence, attribution, or timing of a relevant military action, this component will remain undetermined until the earlier of: i) the confirmation of the occurrence, attribution, and timing of the action based on a consensus of information available from the resolution sources or ii) 3 full calendar days (Iran Standard Time) from the date of the first credibly reported evidence of the action. If this period would extend past December 31, 2027, this component will remain undetermined to allow for 3 full calendar days to pass. At the end of the third calendar day, if conflicting reports remain, the incident will be adjudicated based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this component will be official information from the governments and militaries of the United States and Iran and a consensus of credible reporting. 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 am

Source: Polymarket. The venue's rules are final.

FAQ

How are prediction market odds calculated?

Each contract pays $1 if the outcome happens and $0 if it doesn't, so its price is the market's implied probability: a 60¢ contract means roughly a 60% chance. We show the last trade, or the midpoint between the best bid and ask when the order book is tight.

When does this market close?

Polymarket lists Jan 1, 2028 as the end date; this market has closed.

Where can I trade on Dem sweep & US-Iran ceasefire through 2027?

This market trades on Polymarket. Availability depends on where you live: Kalshi is a CFTC-regulated US exchange, while Polymarket's international site isn't available to US users (Polymarket US is a separate app). You must be 18 or older.