Idaho’s 2nd Congressional District House Race 2026
Idaho’s 2nd Congressional District, anchored by Boise and stretching across the southern and eastern parts of the state, heads to the polls in 2026 to elect its U.S. House representative. The seat has long leaned Republican, reflecting the district’s rural and suburban conservative base. Candidates from both major parties, along with potential independents, are expected to compete for the open contest.
Why Markets Are Watching
Control of the U.S. House often comes down to a handful of competitive districts, and Idaho’s 2nd District results will factor into the broader national balance of power. While historically a safe Republican seat, shifts in turnout or candidate strength could signal wider regional political trends. The outcome matters to voters and party strategists tracking Idaho’s role in the 2026 midterms.
How Prediction Markets Frame the Race
The core question traders are weighing is which party ultimately claims the seat, reducing a multi-candidate field into a binary partisan outcome. Individual candidate contracts let participants isolate the chances of specific nominees breaking through in primaries or the general election. Together, these markets translate a local race into a tradeable signal of partisan strength in a reliably conservative district.
Related terms
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Democratic Party (United States) -
Republican Party (United States) -
Idaho -
Boise, Idaho -
Mike Simpson -
Idaho's 2nd congressional district
Total Volume
$69.3k
Kalshi $7.8k · Polymarket $61.6k
Leading Market
Mike Simpson
Kalshi 97% · Polymarket 98%
Mike Simpson Volume
$36.6k
Kalshi $2.9k · Polymarket $33.7k
Mike Simpson 24h Change
-3.00%
Kalshi -3.00% · Polymarket -2.00%
Calculate Your Potential Return
- Kalshi(opens in a new tab) 7.0% fee
- Polymarket(opens in a new tab) 5.0% fee
| Market | Kalshi Yes | Kalshi Fee | Kalshi Payout | Polymarket Yes | Polymarket Fee | Polymarket Payout |
|---|---|---|---|---|---|---|
| Mike SimpsonRepublican Party | 96.8¢ | 7.0% | , trade Mike Simpson on Kalshi (opens in a new tab) | 98.0¢ | 5% | , trade Mike Simpson on Polymarket (opens in a new tab) |
| Elinor GilbreathDemocratic Party | 4.2¢ | 7.0% | , trade Elinor Gilbreath on Kalshi (opens in a new tab) | — | — | — |
| Ellie GilbreathDemocratic Party | — | — | — | 4.0¢ | 5% | , trade Ellie Gilbreath on Polymarket (opens in a new tab) |
* Estimates if candidate wins. Actual returns may vary.
All Markets
| Market | Total Volume | Kalshi(opens in a new tab) | Polymarket(opens in a new tab) |
|---|---|---|---|
| Mike SimpsonRepublican Party | $36,616.54 | ||
| Elinor GilbreathDemocratic Party | $4,830.83 | No market | |
| Ellie GilbreathDemocratic Party | $27,886.10 | No market |