Prediction markets are regulated by the federal government, which means they are legal at the national level in all 50 states and Washington, DC. Even so, where you can actually trade sports event contracts depends on your state, because several states have gone to court to challenge or block the major platforms. This guide breaks down the legal status of prediction markets in every state as of October 2026, explains why the map keeps shifting, and covers which platforms operate where. Because this is a fast-moving legal area, always confirm current availability with a platform before you fund...