- Will Republicans win the Iowa, Kansas, and Nebraska Senate seats?40¢40%
- Will Democrats win the Iowa and Kansas Senate seats, and Republicans win Nebraska?23¢23%
- Will Democrats win the Iowa and Kansas Senate seats, and an independent win Nebraska?14¢14%
- Will Democrats win the Iowa Senate seat, Republicans win Kansas, and an independent win Nebraska?14¢14%
- Will Democrats win the Iowa Senate seat, and Republicans win Kansas and Nebraska?10¢10%
- Will Republicans win the Iowa and Nebraska Senate seats, and Democrats win Kansas?4¢4%
- Will Republicans win the Iowa and Kansas Senate seats, and an independent win Nebraska?2¢2%
- Will Republicans win the Iowa Senate seat, Democrats win Kansas, and an independent win Nebraska?<1¢<1%
Tight polling averages in Iowa and Kansas Senate races—both rated toss-ups with margins under 2 points between Republican Ashley Hinson and Democrat Josh Turek in Iowa, and Republican Roger Marshall and Democrat Adam Hamilton in Kansas—drive the fragmented outcomes in this combination market. Nebraska’s contest between Republican Pete Ricketts and independent Dan Osborn remains the most Republican-leaning of the three yet stays within reach of a non-Republican result. Late October polling and fundraising patterns show sustained competitiveness in the first two states, elevating probabilities for split results and the broad “Other” category while capping a full Republican sweep. Traders price these dynamics as the election nears, reflecting skin-in-the-game assessment of narrow margins and independent factors.
Rules
This market will resolve according to the outcome of the United States Senate general elections in Iowa, Kansas, and Nebraska that are currently scheduled for November 3, 2026, inclusive of any potential runoffs. A candidate will be considered to represent a party by their ballot-listed affiliation or if they are the nominee of that party. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. Because no Democratic candidate is on the ballot in Nebraska, the Nebraska race is represented by “Republican” and “Independent” (Ind) options. The “Independent” option refers to a win by a candidate running as an independent in the Nebraska Senate election. For purposes of this market, Dan Osborn will be considered to be an Independent regardless of any affiliation that he may have with any party. If the results of one of these elections are not conclusively known by March 31, 2027, or if an independent or third-party candidate wins the Iowa or Kansas election, or a third-party candidate wins the Nebraska election, this market will resolve to "Other". For purposes of this market, a "sweep" is when a party wins all races. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources have conclusively called the relevant elections. If all three sources do not achieve consensus in calling the relevant races for this market, it will resolve based on the official certification.