Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) Pick polygram.ink (preferred broker) |
71% | 29% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
71% | 29% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Peggy Flanagan | 71% |
| Angie Craig | 31% |
| Melisa López Franzen | 0% |
| Ilhan Omar | 0% |
| Keith Ellison | 0% |
| Melisa Hortman | 0% |
| Jacob Frey | 0% |
| Betty McCollum | 0% |
| Steve Simon | 0% |
| David Wellstone | 0% |
| Candidate A | 0% |
| Candidate B | 0% |
| Candidate C | 0% |
| Candidate D | 0% |
| Candidate E | 0% |
| Candidate F | 0% |
| Candidate G | 0% |
| Candidate H | 0% |
| Candidate I | 0% |
| Candidate J | 0% |
| Candidate K | 0% |
| Candidate L | 0% |
| Candidate M | 0% |
| Candidate N | 0% |
| Candidate O | 0% |
| Other | 0% |
Market context
The real-world event is the Democratic primary for Minnesota’s open US Senate seat, with voting on 11 August and a result expected from the Minnesota Democratic-Farmer-Labour Party or through overwhelming credible reporting if the party is slow to publish. The current 71% implied probability for **YES** is consistent with a race that is live but not especially opaque: the field is narrow enough that a programme watching early returns, county-level reporting and campaign statements can usually update quickly once turnout patterns are visible.[1][2][16]
Historically, Minnesota’s Democratic Senate primaries have not been automatically one-sided. In 2024, Amy Klobuchar won renomination by a very large margin, showing that state-level Democratic primaries can settle decisively once the frontrunner consolidates support.[2] In 2026, the main comparison is the two-way contest between Angie Craig and Peggy Flanagan, with Ballotpedia, NBC News and recent coverage all identifying them as the leading candidates; Craig has stronger fundraising, while Flanagan has accumulated notable endorsements and, in at least one recent poll, a lead among Democratic primary voters.[1][3][9][11][15]
For a power-user evaluating this market programmatically, the main catalysts are scheduled rather than speculative: ballot completion on 10 August, primary day on 11 August, and the first official party announcement or a consensus call from major outlets thereafter.[16] Systems that track this market should watch for late endorsement cascades, turnout data from early-vote and Election Day reporting, and any change in candidate visibility after the closing stretch, because those can move the implied winner faster than broader national polls. If the primary were cancelled or materially altered, the market would resolve to **Other**, so a calendar check against the Secretary of State’s election page is the basic dependency to pin down before settlement.[2][16]
Methodology
This page reviews Minnesota Democratic Senate Primary Winner across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Fees, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Minnesota Democratic Senate Primary Winner on Kalshi Fees
Live order book, 0% fees, USDC settlement in seconds.
Open live market →