On election night, millions watched Kalshi's probabilities shift in real time, even though most visitors never traded a contract.

Kalshi says people watching its midterm markets outnumbered traders five to one. For those spectators, Kalshi offers a forecast that keeps moving while the country waits for an answer.

You could spend election night on Kalshi without buying anything, as millions of people did this week. Its midterm display offered maps of congressional races and gauges tracking control of the House and Senate, with percentages changing in real time as the evening unfolded.

It's easy to understand why traders keep such a close eye on Kalshi: every little change in odds changes the value of their positions. Given how much money actually moved hands during the midterms, it's no wonder hundreds of thousands of traders were glued to the platforms.

But millions of people were also looking at Kalshi who weren't making any bets, with most not even having accounts on the platform. In October, Kalshi said viewers of its midterm markets outnumbered traders five to one.

Kalshi’s post-election recap reported more than $2.5 billion in midterm trading volume, compared with $1.3 billion for the 2024 election cycle.

Kalshi's Nov. 5 billion for 2026 midterm markets. The 2026 bar marks the reported lower-bound threshold, not an exact total. Kalshi uses notional volume to measure trading activity; these figures do not count viewers or unique traders. The recap does not specify matching market coverage or start and end times for the two periods.

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