Kalshi vs PredictIt vs Polymarket: which political market is best?
The original political market against the two giants. Limits, fees and which to use for the 2026 midterms.
Short answer: For most people trading the 2026 midterms, Kalshi or Polymarket is the better choice: bigger markets, tighter prices and welcome offers. PredictIt, the original US political market, now allows up to $3,500 per contract and is still popular with politics fans, but its fee structure has historically been higher. All three operate legally in the US.
| Kalshi | Polymarket (US) | PredictIt | |
|---|---|---|---|
| Regulation | CFTC exchange | CFTC exchange | CFTC-approved operator |
| Markets | Everything | Politics, news, sports, culture | Mostly politics |
| Limits | Large | Large | $3,500 per contract |
| Welcome offer | Trade $25, get $25 | Deposit $10, get a $50 trading bonus | Not part of our offers |
| Devices | Web, iPhone, Android | iPhone | Web, apps |
Sources on PredictIt's limits and status: nextpredict.io, ats.io. Check PredictIt's own fee page before trading there.
Which should you use?
- Biggest, most liquid election markets: Polymarket (iPhone) or Kalshi.
- Desktop or Android: Kalshi.
- Small, politics-only trading with a long-time community: PredictIt.
See also how to trade the 2026 midterms.
Kalshi offer, checked 27 September 2026
Trade $25, get $25
Promo code: WINPREDITCS
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Terms apply.
Polymarket offer, checked 27 September 2026
Deposit $10, get a $50 trading bonus
Promo code: WIN
iPhone app only. 18+ only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization. Terms apply.
Read next: Polymarket vs PredictIt.
Frequently asked questions
Is PredictIt still open?
Yes. PredictIt operates in the US under CFTC approval, with a $3,500 limit per contract position.
Why do the same election markets have different prices on PredictIt and Kalshi?
Different users, fees and limits. Price gaps between platforms are common, but fees and withdrawal costs often make them smaller than they look.
