TOTAL VOLUME:
$149.2b
24H VOL:
$225,634,708
24H TRANSACTIONS:
2,818,747,506
OPEN INTEREST:
$1,877,297,258
449,684
Markets across
33,836
events
MATCHED EVENTS:
2,677
PLATFORM COVERAGE:
5
Polymarket:
38%
VS.
Kalshi:
62%
Analysis, predictions, and breakdowns from across the markets.

How to read 2026 midterm election odds: what House and Senate control contracts measure, why they differ, and how to check a price before you trust it.
Jared Polites · Oct 18

A contract doesn't pay out when CNN calls it. It pays out when the specific event named in its resolution criteria actually happens, and that gap can run days or weeks past election night.
Jared Polites · Aug 29