With about a week to Election Day, Kalshi pricing has Democrats heavily favored for the House while forecasters and poll aggregators broadly agree on Democratic

The platform's disclosure follows scrutiny over whether traders with nonpublic information are profiting from election contracts.

Brazil's election result underperformed market-implied odds, prompting debate over whether the miss reflects a structural flaw in election markets or a one-off

Brazilian authorities are examining alleged coordination in online election-related activity involving a foreign political donor network and major platforms.

Polls show a deadlock while Polymarket and other markets price a change of leadership, with roughly $70 million in bets affected by the outcome.

Researchers and policy groups argue that market prices can be misread as forecasts and weaponized in disputes over election results.

Critics including Better Markets and academic commentators argue event contracts on elections are high-risk and poorly suited to forecasting outcomes.

The contest has become one of the most expensive Senate races of the cycle, with heavy outside spending and automated advertising.

Trackers and forecasters including Silver Bulletin and FiftyPlusOne are publishing continuously updated models for House and Senate control.

Betting volume on down-ballot House races illustrates how prediction markets have expanded beyond marquee national contests.

The hedge fund's use of event-contract data signals growing institutional interest in prediction market signals as an alternative data source.

Betting markets continue to price the long-serving Republican incumbent as an underdog against Democratic challenger Troy Jackson.

The vice president's visit underscores Republican efforts to hold a key Midwestern Senate seat in the final week.

The president's claims about election fraud have entered a Senate contest where markets and polls show a competitive race.

The former president's campaign appearances have not moved market-implied odds on control of Congress.

Traders have shifted pricing on the South Carolina Senate race in the closing week of the campaign.

Ohio races are drawing notable event-contract volume and market-based tracking as the state's contests tighten.

The Kansas Senate contest is among the races drawing trader attention as the midterm calendar closes.