Arkansas Senate Race Odds 2026
Prices as of 2026-09-19 18:30 UTC.
Kalshi has Tom Cotton at 93%; Polymarket has Tom Cotton (R) at 94%.
| Candidate / party | Kalshi | Polymarket | Gap |
|---|---|---|---|
| Hallie Shoffner D | 7% bid 7¢ · ask 7¢ · OI $61k | 5% vol $4k | +2 pts |
| Tom Cotton R | 93% bid 93¢ · ask 94¢ · OI $14k | — | — |
| Tom Cotton (R) | — | 94% vol $13k | — |
Arkansas Senate 2026 — Kalshi · Tom Cotton · Polymarket · Tom Cotton (R) · last 90 days
How the Kalshi market resolves
If a representative of the Republican party is sworn in as a Senator of Arkansas for the term beginning in 2027, then the market resolves to Yes.