The "Wyoming Political Domino" Continues: Who Runs for the Open House Seat?

With Harriet Hageman’s move to the Senate race, her House seat, arguably the safest Republican seat in the nation, is now wide open.

While Kalshi doesn’t have a high-volume market for “Wyoming House At-Large 2026” just yet, this is the exact moment to build your watchlist. The departure of an incumbent in a single-district state like Wyoming usually triggers a “great migration” of local politicians looking for a promotion.

Here is the “Watchlist” of names likely to populate that market soon, based on current filings and the state’s political rumor mill.

The “Watchlist” for WY-AL ’26

The dynamics here are entirely dependent on the Governor’s race. Many candidates will weigh whether they have a better shot at being one of 435 in D.C. or the single Governor in Cheyenne.

1. Chuck Gray (The Pivot Play)

Current Role: Secretary of State
Why Watch Him: Gray has been polling his odds for both Governor and U.S. House. He is young, ambitious, and ideologically aligned with the Hageman/Trump wing.
The Strategy: As noted in the Governor market, Brent Bien is surging. If Gray decides the Governor’s primary is too crowded, the House seat offers him a very natural, “freedom caucus” style platform in Washington without a bruising fight against a fellow conservative favorite like Bien.

2. Legislative Leadership (The Bench)

In Wyoming, the path to Congress often runs through the State Legislature leadership. Two names stand out:

Chip Neiman (Speaker of the House): Neiman has deferred to Hageman in the past, saying his plans hinged on hers. With her moving up, he is a prime candidate to step in. He represents the populist wing of the state house.
Bo Biteman (Senate President): Similarly, Biteman is a powerful figure in the state senate who has been rumored for higher office.

3. The “Outsider” Early Bird

Gavin Solomon: It is worth noting that a candidate named Gavin Solomon (a businessman listed from New York/Wyoming) has already filed paperwork for this race. While likely a long shot against established names, early filers sometimes get a jump on grassroots organizing before the big names declare.

The “Domino” Theory

The most profitable insight here is understanding how the Governor and House markets are inversely correlated.

Scenario A (The Clean Split): Brent Bien runs for Governor; Chuck Gray runs for House. This clears the lane for both, and they likely cross-endorse or at least avoid attacking each other.
Scenario B (The Logjam): Both run for Governor. This leaves the House seat wide open for a “tier 2” candidate (like Neiman, Biteman, or a moderate like Tara Nethercott) to walk in.

Market Alpha: Keep an eye on Chuck Gray. His decision is the “key” that unlocks the rest of the board. If he announces for House, buy “Yes” on Bien for Governor immediately, as his biggest primary threat will have just exited the stage.