Political prediction markets let you buy and sell contracts that pay out based on the outcome of an election, a Supreme Court ruling, or a cabinet appointment. In the United States, the legal path runs through CFTC-regulated event contracts on Kalshi, and, for most non-US residents, through peer-to-peer markets like Polymarket. Prices trade between 1 cent and 99 cents, and each cent maps directly to a probability: a contract at 62 cents implies a 62% chance the event happens. This guide covers exactly how to trade elections legally, which platforms are open to you, and how to think about political risk without getting run over.
Are Political Prediction Markets Legal in the US?
Yes, with clear guardrails. In late 2024, a federal court ruled that Kalshi could offer event contracts on which party controls Congress, and by the 2024 general election Kalshi was listing contracts on the presidential race, Senate control, and dozens of state-level outcomes. Those contracts are regulated by the Commodity Futures Trading Commission (CFTC) as designated contract market products, which puts them in a different legal bucket than sports betting or offshore political wagering.
Polymarket, by contrast, runs on a public blockchain and settles in USDC. It agreed in 2022 not to serve US residents as part of a CFTC settlement, and it geoblocks US IP addresses. Non-US traders use it freely, and it consistently posts the highest political volumes in the world.
Everything else, including offshore books that quote “election odds” in American moneyline format, sits in a gray zone at best. Traders who care about the legal path stick to Kalshi in the US and Polymarket abroad.
Kalshi vs Polymarket for Political Contracts
The two platforms cover similar events but the trading experience is very different. This is what actually matters when you place a political trade:
| Feature | Kalshi | Polymarket |
|---|---|---|
| US legal | Yes, CFTC-regulated | No, geoblocked for US users |
| Funding | USD via ACH, debit, wire | USDC on Polygon |
| Fees | 0 to a few cents per contract | 0% trading fee, gas only |
| Resolution | Kalshi’s rulebook, standardized | UMA optimistic oracle |
| Political coverage | Elections, Congress, Fed, SCOTUS | Elections, geopolitics, policy |
| Typical liquidity | Deep on flagship markets | Deepest global political volume |
If you are in the US and want a receipt, a 1099, and a phone number to call, Kalshi is the default. If you want the biggest global political order book and you are outside the US, Polymarket is where the money actually sits.
How to Start Trading Political Markets Legally
The process is straightforward on both platforms, but each has a different onboarding path.
On Kalshi, you open an account, verify your identity under CFTC rules, and connect a bank account or debit card. Deposits clear in minutes for debit and a business day for ACH. You place a limit or market order in cents, and your position is marked to market until the contract resolves.
On Polymarket, you connect a wallet, bridge USDC to Polygon, and trade through the platform’s order book. Because contracts settle on-chain, you can withdraw your USDC at any time without waiting on a bank.
On both platforms, one contract pays $1 (100 cents) if the event happens and $0 if it does not. Your profit is the difference between your entry price and the final settlement, minus fees.
Reading Political Odds Like a Trader
The single most useful skill is treating contract prices as probabilities, not opinions. Here is how the math works in practice:
- A Senate-control contract at 58 cents implies a 58% probability. If you think the true probability is 65%, you have a 7-point edge, and repeated trades at that edge compound.
- Two mutually exclusive outcomes (Democrat wins vs Republican wins) should sum to roughly 100 cents. When they sum to more, arbitrage is available; when they sum to less, the book is telling you a third outcome is live.
- Short-dated contracts move faster than long-dated ones. A presidential contract in October will react to every debate; the same contract in April barely notices a fundraising report.
Polls are one input among many. Sharp political traders also watch fundraising, primary turnout, forecast models like the Economist and Silver Bulletin, and the flow inside the order book itself.
Strategies That Actually Work in Political Markets
Political markets reward patience and structure. A few approaches show up repeatedly among traders who post positive results across cycles:
Model-vs-market spreads. Take a public forecast, compare it to the contract price, and only trade when the gap is large enough to cover fees and be wrong sometimes. A 3-point edge is not enough. A 7-point edge with a documented model behind it is a real trade.
Event-driven fades. Prices overshoot on debate nights, indictments, and viral moments. If a candidate spikes 8 cents on a single news cycle, the fade back toward the pre-event level is one of the most reliable trades in political markets, provided the news is atmospheric rather than structural.
Correlated baskets. If you think a party will overperform, buying a basket of individual Senate contracts often gives a better price than the top-line control contract, because the individual seats carry less attention and wider spreads.
Resolution-clock trading. As a contract nears settlement, uncertainty collapses and prices pin. Traders who understand the resolution rules — recount windows, certification dates, tiebreak procedures — capture the final few cents that casual traders leave on the table.
What to Watch Out For
Two mistakes dominate new political traders. The first is confusing conviction with edge: being sure a candidate will win does not mean the market is mispriced, because the market may already agree with you. The second is under-sizing time. Political contracts can stay wrong for months. If your capital is not comfortable being locked up through a full news cycle, size accordingly.
Taxes matter too. Kalshi contracts are typically treated as Section 1256 60/40 contracts, which is favorable for many traders, but confirm with a professional. Polymarket winnings, for traders in jurisdictions where it is legal, are usually ordinary income unless local rules say otherwise.
Where to Trade Political Markets
The right platform depends on where you live and what you want. In the US, Kalshi is the only fully legal, regulated option for real-money political event contracts, and its coverage of elections, Fed decisions, and legislative outcomes now runs deep. Outside the US, Polymarket carries the biggest global political order books and the tightest spreads on high-volume contracts.
See our updated ranking of the best prediction markets for a full side-by-side, or go straight to the platforms:
Political prediction markets are not a shortcut to being right about politics. They are a way to get paid when you actually are.