DoubleZero Adds Kalshi Election Markets Ahead of U.S. Midterms

Kalshi operates a US-regulated event-contract exchange where institutional traders use real-time order-book data to assess prices, liquidity and market depth. DoubleZero runs a dedicated fiber network designed to distribute data with more predictable latency than the public internet, infrastructure that could help market makers respond faster and quote tighter spreads as prediction markets attract more professional trading firms.

Kalshi said on Aug. 13, 2026, that it became the first prediction market to stream complete Level 1 and Level 2 order books through DoubleZero. Institutional clients can receive top-of-book quotes and depth across price levels directly, instead of reconstructing the book from incremental API updates. The companies did not disclose pricing or other financial terms for the service.

Prediction markets translate prices on real-money event contracts into continuously updated probabilities, offering campaigns and voters a market-based complement to conventional polling. The stakes are high in the Nov. 3, 2026, midterm elections: all 435 House seats and about one-third of the Senate will be contested, with control of Congress set to shape President Donald Trump’s legislative agenda. Kalshi raised $1 billion at a $22 billion valuation in May, underscoring the sector’s rapid expansion.

Kalshi launched its Midterms Hub on July 21, combining live markets for House, Senate and gubernatorial races with VoteHub polling averages, Federal Election Commission fundraising data, historical results and campaign news. At launch, its contracts assigned Republicans a 56% chance of retaining the Senate and Democrats an 83% chance of winning the House. Kalshi said about 75% of visitors use the platform to follow forecasts rather than trade, while candidates favored by its markets have won about 90% of U.S. races since 2024.