US Elections 2028 on Polymarket: The Cycle, Priced From Day One

The market map: a four-year structure

The cycle's markets nest like Russian dolls. Nominee markets (one per party) run longest and carry the most early liquidity - they are where the invisible-primary signal lives, years before voters touch a ballot. Primary-state markets appear as contests approach and resolve in bursts through the spring of 2028. The presidential market is the flagship - the deepest political market in the world by the general election. Control markets (Senate, House) price the legislative map, and state-level presidential markets turn the electoral college into fifty separately-tradeable questions whose consistency with the national market is itself a recurring trade.

Mechanics for newcomers: the politics trading guide covers how political order flow differs from sports - slower news, longer holds, heavier tails.

What election markets get right

The honest record, accumulated since the 1990s academic studies: election markets beat polling averages at long horizons, react to events in minutes rather than polling cycles, and never have a margin-of-error problem - the price IS the consensus including everyone's poll-reading. They are at their best in exactly the spots polls handle worst: candidate-survival questions (will X drop out, will Y run), nomination races with more than two viable candidates, and fast-moving post-debate or post-scandal windows where the next quality poll is a week away but the market reprices by morning.

Their structural advantage compounds late: in the final weeks, when partisans distrust every poll, the market is aggregating early-vote data, county-level registration shifts and private polling through the only channel that makes such information legible - position-taking.

Where they fail - the documented biases

Three documented failure modes, all tradeable once known. Longshot bias: hopeless candidates trade at 2-4% when their true odds are below 1% - small-dollar lottery buying keeps the tail fat, and patient sellers of the tail have collected that premium every cycle. Partisan money imbalance: when one side's supporters dominate a platform's user base, their candidate trades rich; the gap between market price and model consensus has historically been a fade signal, not information. Stale-narrative stickiness: markets hold on to a "presumptive nominee" framing weeks after the fundamentals crack, because exiting a crowded consensus position is slower than entering it. None of these invalidate the instrument - they are the cost of the aggregation, and knowing them is the difference between using the price and being used by it.

Resolution: courts, calls and the rules tab

Election markets resolve on official outcomes, and the gap between election night and official certification is where the fine print earns its keep. Markets specify whether they resolve on media projections, certification, or inauguration - in a contested scenario those are different dates and potentially different answers. Nominee markets define what "nominee" means (formal convention vote, not presumptive status). Drop-out and ballot-access edge cases are spelled out per market. The 2020 cycle taught this category its hardest lessons, and current rules language is far tighter as a result - but the obligation to read it did not go away. The resolution guide covers the dispute process.

Trading the cycle: a timeline view

Now through early 2027 - the invisible primary: prices move on fundraising reports, staff hires and early-state visits; volumes are thin and a disciplined view on who actually runs beats any polling instinct. 2027 - announcement season: each entry and pass reprices the whole field; the recurring mistake is overpricing famous names who never file. Early 2028 - primaries: state markets resolve in rapid sequence and nominee markets converge violently after the first contests; the spread between early-state results and national-market reaction has historically overshot in both directions. Mid-2028 - veepstakes and conventions, the cycle's purest narrative-trading window. The general - the deepest market of the cycle, where state-by-state consistency trades, debate windows and the final-week early-vote signal dominate. Position sizing across a two-year hold is its own discipline - the position sizing guide applies throughout.