A few days before the first round of Los Angeles’s mayoral primary, Kalshi and Polymarket gave reality TV star Spencer Pratt a 75 percent chance of advancing to the general election. Kalshi published ...

As Spencer Pratt fell behind in the Los Angeles mayoral primary, an unexpected group began claiming election fraud: people tracking the Republican's success on prediction markets, the increasingly ...

The significant boom of prediction markets is pushing U.S. elections into uncharted territory, prompting concern and scrutiny about the risks and regulation of betting on political outcomes. Kalshi, ...

Corrections and clarifications: This story has been updated to add new information and clarify the distinction between state-level election betting laws and prediction market regulations. U.S. states ...

Add Yahoo as a preferred source to see more of our stories on Google. Polymarket advertisements predict a victory for Zohran Mamdani in the New York City mayoral election in November 2025. (Olga ...