Which party will win the Senate in 2026?

「Which party will win the Senate in 2026?」に関する最新の予測市場データによると、トレーダーの間で強いコンセンサスが形成されています。

現在、Democratic Party が 51.5% という圧倒的な勝率で市場を支配しています。Republican Party が 49.5% で2番手。この市場の賭け金はすでに $4.1M に達し、高い関心を示しています。

各結果の位置をより的確に評価するため、市場はインプライド確率と契約価格に基づいて3つの取引ティアに分けられます：

🥇 ティア1：圧倒的なリーダー

• Democratic Party (51.5%)：最も高い確率を持つ Democratic Party は板から厚く支持されています。この結果に賭けるトレーダーは 52¢ の「Buy Yes」契約価格に直面し、市場の強い確信を示しています。 この契約だけで $2.4M の出来高を生んでいます。

🥈 ティア2：主要な対抗馬

• Republican Party (49.5%)：最も有力な対抗馬として、Republican Party は 49.5% の的中確率を維持しています。「Buy Yes」株は現在 50¢ で取引されています。

This market will resolve according to the party that wins control of the United States Senate 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.

The following rules govern the counting of seats for determining which party wins control of the chamber.

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. Runoffs for qualifying elections will determine attribution of the relevant seat, even if they take place after November 2026. Vacant 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 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 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 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.

人間のコンセンサスと投機的出来高がより広い予測市場を形作る一方で、当社の定量アルゴリズムはデータ駆動の対抗的視点を提供します。ファンダメンタルなシグナル、基調トレンド、過去の分布を分析し、AI バリュエーションモデルは各結果に独立した「フェアバリュー」確率を算出します。

このフェアバリューを現在の取引価値と比較すると、大きな乖離——すなわち期待値（EV）ギャップ——が明らかになります。プラスの EV ギャップは統計的に割安な結果を、マイナスの EV ギャップは市場の過剰反応の可能性を示します。

トップ AI アルファ＆ミスプライス裁定機会

最新のデータモデル実行に基づき、いくつかの主要な契約が顕著な乖離を示しています：

• 最も過大評価された結果：Republican Party は現在 49.5% で取引されていますが、AI のフェアバリューはわずか 44.6% です。これは -4.9% という大きなマイナス EV ギャップを生み、群衆がこの結果を過剰に煽り、プレミアムを高くしすぎている可能性を示します。