TOTAL VOLUME:

$54.6b

24H VOL:

$283,259,638

OPEN INTEREST:

$1,235,549,422

505,521

Markets across

13,661

events

MATCHED EVENTS:

1,892

PLATFORM COVERAGE:

4

Polymarket:

51%

VS.

Kalshi:

49%

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Trending

Balance of Power: 2026 Midterms

Jul 11, 2025, 5:15 PM EST - Nov 2, 2026, 7:00 PM EST
Total volume:
$16,063,986
Volume 24h:
$110,135
279%
Liquidity:
$833,084
3%
Open interest:
$1,211,955
0%
Outcome
Chance %
Price
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
Trade

Description

This event group tracks the partisan control of both chambers of the U.S. Congress following the 2026 midterm elections. Markets resolve based on which party wins majorities in the House and Senate, with four possible outcomes (Republican Senate + Republican House, Republican Senate + Democratic House, Democratic Senate + Republican House, Democratic Senate + Democratic House) plus an 'Other' category for edge cases.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Polymarket and Predict present identical resolution criteria, definitions of party control, party affiliation determination, ambiguity resolution mechanisms, and source hierarchy.

Primary resolution logic:

Associated Press, Fox News, and NBC (all three must achieve consensus); official certification if consensus not reached

Core resolution logic:

  • House control: party winning majority of voting seats
  • Senate control: party with more than half of voting members, or exactly half with Vice President support
  • Party affiliation: ballot-listed party or most recent expressed caucus intent at time of conclusive media call
  • House ambiguity resolution: party affiliation of first Speaker elected after 2026 midterms
  • Senate ambiguity resolution: party affiliation of first Majority Leader elected after 2026 midterms
  • Independent or third-party candidates: classified by most recent caucus intent with Democrat or Republican parties

Edge cases & Clarifications:

  • Tied or Ambiguous House Control: If seat count does not clearly establish majority, resolution defers to the party affiliation of the first Speaker of the House selected following the 2026 elections.
  • Tied or Ambiguous Senate Control: If voting member count does not clearly establish control (including scenarios where VP tiebreaker role is disputed), resolution defers to the party affiliation of the first Majority Leader of the Senate selected following the 2026 elections.
  • Independent or Third-Party Candidates: Candidates without ballot-listed Democrat or Republican affiliation are classified by the party they most recently expressed intent to caucus with at the time the elections are conclusively called by media sources.
  • Media Source Disagreement: If Associated Press, Fox News, and NBC do not reach consensus on winners, resolution is determined by official state and federal certification processes.
  • Other Outcome: Resolves if none of the four standard partisan combinations (RR, RD, DR, DD) occur, such as if a third party or independent gains decisive control of either chamber.

Timing:

Resolution occurs once all three media sources (AP, Fox News, NBC) have conclusively called winners of both House and Senate races in the 2026 U.S. midterm elections, or upon official certification if media consensus is not achieved. Expected timing: November 2026, with potential delays if races remain undecided.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

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PredictionHero © 2026 · v0.13.0PredictionHero provides aggregated market data and informational signals only. Nothing on this site constitutes financial, legal, or investment advice. Markets are volatile and speculative. Past performance does not guarantee future results. Always do your own research and consult qualified professionals before making decisions involving risk.