Every week, a peculiar question gets priced in real time on Kalshi: Will Donald Trump's approval rating clear a specific threshold by Thursday?
The current contract, expiring April 26, asks whether VoteHub's time-adjusted approval average for Trump will be above 39.9% as of April 23 — verified at 10:00 a.m. ET on April 24. What was once a modest lean toward "No" has hardened into near-consensus. The market currently assigns a 91% chance that Trump's approval won't clear that bar — a figure that reflects far more than routine polling noise.
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Why Odds Moved So Drastically
Recent polls, including NBC News showing 37% approval and AP-NORC recording a net disapproval of +34, have driven the implied probability of a "No" resolution to over 90%. Additionally, record-low economic approval and gas prices still topping $4 per gallon are compounding the picture. For the first time in his second term, Trump's approval dipped below 40%, hitting 39.7% in the Silver Bulletin average. Nate Silver described the milestone as reflecting "profound problems," driven largely by the ongoing Iran war and its economic fallout.
How the Trump Approval Rating Market Works
The market resolves "Yes" only if VoteHub's time-adjusted average — not a raw polling average — reads above 39.9% at the first 10:00 a.m. ET check after April 23. If VoteHub doesn't display data for that date, the most recent prior time-adjusted average is used. Values are compared to one decimal place precision. It's a specific, verifiable trigger, which is part of what makes the 91% odds so telling: traders aren't just betting on a vague directional move, they're betting against a precise number that current polling suggests Trump is already below.
Here's a handy tool that can help you convert prediction market odds to American odds.
A Number Worth Watching
At 39.9%, the threshold sits right at the fault line of where Trump's approval has hovered. For the market to resolve "Yes," a meaningful wave of favorable polls would need to move VoteHub's time-adjusted average above that line before Thursday morning's check. Traders on Kalshi and other political betting sites appear to believe that won't happen, with Reuters-Ipsos and other surveys signaling mounting midterm risks for Republicans.
The market resolves on Thursday at 10:00 a.m. ET. Right now, it's about as one-sided as these markets get.
