US Senate Postpones CLARITY Act Vote Until September, Prediction Market Odds Collapse

The U.S. Senate has pushed a key procedural vote on the Digital Asset Market Clarity Act into September, delaying a bill that would create the first federal regulatory framework for digital assets — including the prediction market platforms that have exploded in popularity over the past two years. Senate Majority Leader John Thune confirmed lawmakers left Washington for their August recess without scheduling a cloture vote, meaning the bill won’t return to the floor until the Senate reconvenes in mid-September.

The delay is more than a scheduling footnote for anyone following the prediction markets space. The Clarity Act, formally known as H.R. 3633, would establish clear jurisdictional lines between the Commodity Futures Trading Commission and the Securities and Exchange Commission over digital asset markets, a framework that platforms like Kalshi and Polymarket have been watching closely as they push further into event contracts tied to sports, politics, and economic outcomes.

Why the Vote Keeps Slipping

The bill needs 60 votes to clear a Senate cloture motion, meaning Republicans — who hold 53 seats — need at least seven Democrats to cross the aisle. According to reporting from The Block, Democratic lawmakers have been reluctant to agree to a floor vote, largely over unresolved ethics provisions covering officials’ financial interests in crypto-adjacent markets. That standoff, combined with a shrinking legislative calendar ahead of the November midterms, left Thune without a viable path to bring the bill up before the recess.

The House already passed its version of the legislation 294-134, and the Senate Banking Committee advanced a companion measure 15-9 back in May. But full Senate passage requires reconciling both chambers’ bills and clearing the higher 60-vote threshold — a bar that has proven difficult to reach amid the ethics dispute. The Senate is not scheduled to return to Washington until September 14, leaving a narrow window of working days before midterm campaign season consumes floor time entirely.

What It Means for Prediction Markets

The market reaction has been swift. Odds on Polymarket and Kalshi tracking whether the Clarity Act becomes law in 2026 have collapsed in recent days, falling from as high as 82% earlier this year to roughly 14-16% following confirmation of the delay. Traders on Kalshi have shifted capital toward longer-dated contracts betting on passage by January 2027 or January 2028, suggesting the market now views a 2026 signing as increasingly unlikely rather than simply postponed.

For platforms operating in the event-contract space, the continued absence of a federal framework means prediction markets remain in a regulatory gray zone shaped largely by CFTC oversight and ongoing state-level challenges rather than a settled statute. A framework like the Clarity Act would give operators — and the traders using platforms to speculate on everything from prediction markets outcomes to election results — more legal certainty than they currently have. Until the bill clears the Senate, that certainty stays on hold.

Thune has indicated the bill will be a priority once the Senate returns, telling reporters it would be “queued up first thing” in September. Still, with only a handful of working weeks before the midterm elections dominate the legislative agenda, the path to a floor vote — let alone a conference agreement and a presidential signature — remains narrow. Anyone weighing whether to try a platform like Kalshi or Polymarket in the meantime should know the regulatory landscape underpinning these markets is very much still in flux.

What Happens Next

When the Senate returns September 14, Thune faces a tight procedural clock: a cloture filing requires an intervening day before the first vote, followed by up to 30 hours of debate. That timeline, paired with unresolved Democratic demands on the ethics language, means even a September push could stretch into October before any final vote — assuming Democrats agree to a time agreement at all. For now, the Clarity Act remains on the Senate calendar with priority status, but no guaranteed date, leaving the crypto and prediction markets industries to wait out another legislative recess.