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Politics·8 min read
2028 Presidential Election Prediction Markets: PredictIt, Kalshi, Polymarket Guide
By Catie Di StefanoPublished April 21, 2026Updated September 6, 2026
The 2028 race is the deepest political contract on prediction markets. Kalshi, Polymarket, and PredictIt collectively trade nine figures. Here's how to read it from California.
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Sources & further reading
Every figure and legal claim on this page traces back to a primary source. These are the ones we checked, open them and verify us.
- Federal Election Commission
Candidate filings and campaign finance. How we confirm who is actually running.
- California Secretary of State: elections
Certified California candidate lists, primary dates, and official results.
- U.S. House of Representatives: roll of members
Current seat holders, used for California district-by-district coverage.
- CFTC: Commodity Futures Trading Commission
The federal regulator that authorizes and supervises every event-contract exchange we cover.
Frequently asked questions
Does PredictIt have 2028 election markets?
- Yes. PredictIt lists 2028 presidential nominee and general election markets under its CFTC no-action letter, with an $850 position cap per market. For deeper liquidity without caps, Kalshi and Polymarket offer the same 2028 contracts to US traders.
PredictIt vs Kalshi vs Polymarket for 2028. Which is best?
- Kalshi has the deepest US-regulated liquidity and no position caps. Polymarket carries the highest global volume via USDC. PredictIt has the longest 2028 history but $850 per-market caps that limit serious trading. Most California traders use Kalshi or Polymarket for size and PredictIt only for pricing reference.
Is it legal to trade 2028 election markets in California?
- Yes. CFTC-regulated platforms including Kalshi, Polymarket, and PredictIt offer 2028 election contracts to California residents under federal commodities law.
Where's the deepest liquidity?
- Kalshi has the deepest US-regulated liquidity. Polymarket carries higher absolute volume thanks to its global user base. PredictIt has lower volume but a long history of clean resolutions.
What contracts are tradable?
- General election winner, Republican and Democratic nominees, vice presidential picks, popular vote winner, and state-level markets for the major swing states.
What moves the market?
- High-quality polls, debate performances, primary results (Iowa, NH, Super Tuesday), VP announcements, legal and health events, convention bumps, and election night calls.
How is California priced?
- California reliably trades at 85-95 cents YES Democrat in presidential elections. The interesting California angle is margin of victory and down-ballot effects on the 2026 governor race.
Which platform has the highest limit for 2028 Presidential contracts?
- Polymarket currently offers the highest effective limits for 2028 election markets due to its decentralized liquidity pools. Kalshi, as a CFTC-regulated exchange, has specific position limits governed by federal rules. For California traders looking to move six or seven figures, Polymarket provides the necessary depth that regulated platforms often lack.
Are 2028 election markets on Kalshi considered legal under California law?
- Yes, because Kalshi is a federally regulated exchange overseen by the CFTC, its event contracts are legal for California residents. This differs from online sportsbooks, which remain illegal following the failure of Propositions 26 and 27. The contracts are classified as financial instruments rather than prohibited gambling under state statutes.
Legal & Compliance
Legality, regulation, and your protections
For full guardrails, see our Responsible Trading guide and our editorial Disclosure. This page is informational, not legal or tax advice.
Responsible Trading
Trading safely: the questions that matter
Is trading prediction markets the same as gambling?
- No. Prediction markets are CFTC-regulated event contracts, financial derivatives, not casino games. That said, you can still lose every dollar you put in. Treat capital at risk as money you are prepared to lose.
How much should I trade with?
- Only with money you can afford to lose without affecting rent, bills, or savings goals. A common rule of thumb: cap total prediction market exposure at 1-5% of your discretionary income.
What are the warning signs of problem trading?
- Trading to recover losses, hiding activity from family, borrowing to fund deposits, missing work or sleep, or feeling unable to stop. If any of these apply, step away and call 1-800-GAMBLER.
Where can I get help in California?
- Call the California Problem Gambling Helpline at 1-800-GAMBLER (free, confidential, 24/7) or visit ncpgambling.org. Most platforms also offer self-exclusion and deposit limit tools in account settings.
Can I set deposit or loss limits?
- Yes. Kalshi, Polymarket, Sleeper, and Chalkboard all offer self-imposed deposit limits, loss limits, and cooling-off periods. Set them when you open the account, not after a bad week.
If you or someone you know needs help, call 1-800-GAMBLER or visit ncpgambling.org.
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Next steps
Top platforms Californians are using:
Polymarket
The world's largest prediction market, now live on iPhone in the US.
21+ 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.
Kalshi
The regulatory leader.
Sign up at KalshiCertain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 21+ 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.
OG (by Crypto.com)
CFTC-regulated event contracts. Get up to $100 in bonuses.
Sign up at OG (by Crypto.com)