A bipartisan Senate pair is demanding the prediction market operators detail how they police insider trading in election contracts ahead of the midterms.

The prediction market platform's new funding round values it at $40 billion as it expands beyond election contracts.

Polymarket is probing a late surge of wagers on an Israeli election outcome, reviving questions about manipulation in thin political markets.

The two largest prediction markets head into Election Day under scrutiny over whether their prices track reality better than polls.

Reviewing recent election misses, the WSJ questions whether market prices will outperform pollsters in 2026.

CNBC examines unusual trading patterns in political event contracts as the midterms approach.

Silver's newly launched forecast model lifts Democratic odds in both chambers days before Election Day.

Markets show Democratic leads in key races, but analysts debate bias, manipulation and whether spikes distort prices.

Polling and market aggregates show Democratic leads widening in the race for control of Congress.

A major forecaster revised nine Senate race ratings, citing Democratic polling gains highlighted by Nate Silver.

Commentary and analysis argue market prices convey false precision in political forecasting.

Both platforms struck newsroom partnerships for election coverage while some outlets keep market odds off air.

Several Senate contests are narrowing as Election Day approaches.

A roundup of polls and predictions for the 2026 midterm elections.

Ohio faces pressure to restrict election-outcome betting as prediction markets expand into state races.

A state-by-state look at market odds across competitive Senate contests.

Market prices show a wide lead for Talarico in the Texas Senate race against Paxton.

A candidate blocked from Kalshi raises questions about who benefits from political event contracts.