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Top story Prediction markets post strong election-night record as Democrats sweep Congress

Kalshi, Polymarket and other venues largely called a Democratic sweep of Congress before TV networks, giving the industry its biggest credibility test yet.

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ReutersPrediction markets get Democratic win right, with a few surprisesCNBCPrediction markets cement their status after forecasting Democratic sweep of CongressBloombergThe Midterm Predictions Were GoodThehillDemocrats won big on Election Day. Prediction markets gave an early glimpseYahooPrediction markets take a victory lap after calling the election before TV networksYahooPrediction markets get Democratic win right, with a few surprisesKfgoPrediction markets get Democratic win right, with a few surprisesCovers2026 Midterm Results: Prediction Market Accuracy and Key UpsetsThe Wall Street JournalThe Prediction-Market Bettors Who Turned Election Night Into a Real-Time CasinoNymagKalshi Also Won the MidtermsSubstackPrediction Markets And Midterms: A PostmortemQz9 prediction-market bets and stories from the 2026 midterm electionsSeekingalphaPrediction markets score big as Democrats sweep Congress (SPY:NYSEARCA)IgamingbusinessPrediction market traders expect Dems to record Blue sweep in US House-Senate
Midterm prediction market volume tops $1.9 billion as trading goes mainstream

Record wagering on the 2026 midterms marks prediction markets' arrival as a mass-market venue despite regulatory uncertainty.

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Democrats sweep Congress; markets rally on divided-government gridlock

Investors bet a split Washington means fewer policy shocks, sending equities higher after Democrats' win.

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Nebraska voters reject mobile sports betting initiatives

The failed ballot measures leave Nebraska among the shrinking group of states without legal mobile sports wagering.

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Ninth Circuit denies Kalshi rehearing in Nevada election-contract case

The appellate refusal leaves Kalshi's fight over state-level election betting in Nevada without further federal review at this stage.

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Kalshi's midterm trading surpasses $2.5 billion in election cycle

The figure underscores how election contracts have become a core volume driver for the platform.

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Michigan: El-Sayed wins Senate race, beating Rogers as markets predicted

The Michigan result matched prediction-market pricing that had favored the Democratic candidate in the closing days.

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Mississippi Senate: Colom flips to favorite, threatens Hyde-Smith upset

Traders priced a possible Democratic upset in deep-red Mississippi as odds shifted overnight.

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Prediction markets face bipartisan scrutiny after midterm surge

Lawmakers and state officials are weighing tighter rules as election betting volume hits records.

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Election results open path to sports betting expansion in Texas and Oklahoma

Down-ballot outcomes in Texas and Oklahoma could unlock new sports betting and THC legislation in the next session.

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Prediction markets under fire: critics say they missed the size of the Democratic wave

Critics argued the platforms' probabilities understated Democratic margins even as they called the overall outcome.

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Prediction markets vs. polls: who called the 2026 midterms better?

The midterms served as the industry's biggest head-to-head test against traditional polling and forecasters.

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Midterms could reshape US gambling policy in three key ways

Industry analysts see the election altering the odds for sports betting and iGaming expansion across multiple states.

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Democratic sweep odds climbed above 98% in final hours of voting

Markets priced near-certainty on a Democratic Congress as polls closed on Election Day.

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Jon Ossoff leads 2028 prediction markets after Georgia re-election

Ossoff's win moved him to the front of early Democratic presidential nomination markets.

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Prediction markets face midterms accuracy test as election betting soars

Ahead of voting, markets broadly priced a Democratic sweep of the House and Senate.

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