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© 2026 Insider Trade Flow. Not financial advice. All data sourced from public SEC filings, 13F reports, and Polymarket.
Polymarket/United States

Balance of Power: 2026 Midterms

This market will resolve according to the party that wins control of the United States Senate and the party that wins control of the United States House of Representatives in the 2026 United States midterm election. 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 specified 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 specified 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 specified election, seats are attributed to the party that holds the seat as of the date of the 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 election, the seat is attributed to the party under which the member was affiliated at the time of the 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 election, this market may remain open 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 this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.

All Outcomes

5 candidates
12026 Balance of Power: D Senate, D House
61.5%
22026 Balance of Power: R Senate, D House
29.5%
32026 Balance of Power: R Senate, R House
8.5%
42026 Balance of Power: D Senate, R House
0.9%
52026 Balance of Power: Other
Ends Nov 4, 2026United States
0.1%
Volume
$21.2M
Liquidity
$8.5M
24h Trades
0
Whale Trades
0

24h Flow Analysis

Buy Flow: $0Sell Flow: $0
Flow Imbalance0.0%
⚖️ Neutral flow - balanced buying and selling

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Frequently Asked Questions

What are the current odds?

YES: 62% | NO: 39%

How much volume has been traded?

$21.2M total volume

What is the market sentiment?

Neutral - balanced flow

When does this market end?

Nov 4, 2026

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Republican Presidential Nominee 2028
49% YES$710.7M
Which party will win the House in 2026?
91% YES$15.9M
Which party will win the Senate in 2026?
63% YES$6.2M
View all United States markets →

About This Market

This prediction market aggregates information from an estimated 424,424 trades. The current price of 62¢ implies a 62% probability of this outcome occurring. Trading activity has been primarily retail-sized.

What's Driving the Odds

High Volume: With $21.2M traded, this is one of the most actively traded markets. Higher volume typically means more accurate price discovery.

How to Trade This Market

This is a multi-outcome market with 5 possible outcomes. Each outcome has its own YES/NO market where you can bet on whether that specific candidate/option will win.

Example: If you think 2026 Balance of Power: D Senate, D House will win, you can buy YES shares at 61.5¢. If correct, you receive $1.00—a potential 63% return.

Alternatively, if you believe a leading candidate is overvalued, you can buy NO shares on their market to profit if they don't win.