The 2028 Democratic presidential nominee market is the largest political future listed on either exchange, carrying roughly $1.5B in cumulative volume across 59 priced contenders on Kalshi and Polymarket. The top of the board compressed through August rather than separating, and the two leading names now sit a couple of cents apart with a third close behind, so this is a field with a lead pack rather than a frontrunner. The live board above ranks the current cross-platform price on every name; the market resolves when the Democratic Party confirms its nominee at the 2028 national convention, expected in the summer of 2028.
The 2028 Democratic presidential nominee market is a long-dated futures contract with 59 priced contenders and roughly $1.5B in cumulative volume behind it, and its defining feature is that nobody owns it. The last two weeks compressed the board rather than resolving it: the leader gave back ground, the name behind her held, and the gap at the top closed to about 2c as of August 31, 2026. That is a lead pack, not a frontrunner, and it is the honest read on a nomination that will not be settled for another two years. The live board above ranks every contender by current cross-platform price. This page covers who the field actually is, what structurally moves it, and exactly how it resolves.
Alexandria Ocasio-Cortez still sits at the front of the 2028 Democratic nominee board on both Kalshi and Polymarket, the position she took from Gavin Newsom in the first half of 2026. The structural case behind her price is the one no other contender can replicate: the largest small-dollar donor base in the party, the widest independent media reach of anyone in the field, and uncontested ownership of the progressive lane while the moderate lane splits six ways. Her contract is the cleanest expression on the board of where the party's activist energy sits heading into the midterms.
What changed in August is the size of the lead, not the identity of the leader. Her Kalshi contract drifted lower through the back half of the month while the field behind her held its ground, and the two exchanges have not agreed on her number for most of that stretch. Polymarket carries her roughly 3c richer than Kalshi as of August 31, 2026, the widest platform disagreement on any leading name on this board. That spread is not a pricing error. It is two different trader bases reaching two different conclusions about the same candidate, and on this contract the disagreement is not about whether she is popular. It is about whether popularity converts into delegates.
The counterweight to her position is that she has never run a statewide or national race. The board is pricing reach and enthusiasm rather than a demonstrated ability to assemble a national primary electorate, and any nomination path runs through a contested primary calendar rather than a coronation. Her spot at the top has been durable for months. Her margin over it has not.
Jon Ossoff has passed Gavin Newsom for second on this board and is now the closest thing the market has to a live challenger. He is also the contender with the most direct catalyst on the calendar. His Georgia Senate reelection on November 3, 2026 is a genuinely competitive race in a state that has trended back toward Republicans, and a win there is the cleanest 2028 credential anyone in the field can earn this cycle. It cuts the other way just as hard. A loss in November takes most of the case with it, which makes his contract the most binary position among the leaders and the only one at the top of the board whose central premise has a hard resolution date inside the next three months.
Gavin Newsom carried the largest share of this board for most of 2026 and has now settled into a clear third. The mechanical reason is that his platform is expiring. He is term-limited as governor of California and leaves office in January 2027, which removes the daily national megaphone that built the position in the first place. What he keeps is name recognition and the broadest donor network in the field, which is why he has not fallen out of the top tier. Kalshi and Polymarket price him within a cent of each other, the tightest agreement among the three leaders. His is the most settled opinion on the board, and settled opinions are the ones a primary calendar tends to disturb.
Behind those three the field flattens fast. Kamala Harris carries residual national organization as the 2024 nominee and holds the fourth spot comfortably, though the platform gap on her contract that was visible earlier in August has since closed to roughly a cent. Pete Buttigieg and Josh Shapiro lead the credible-but-unlaunched tier, followed by Mark Kelly, Rahm Emanuel, Andy Beshear, and Wes Moore. Below them sits a cluster of Ro Khanna, J.B. Pritzker, James Talarico, and Abdul El-Sayed in the low single digits. That cluster is where new entrants land first and where the board is most likely to look different six months from now, because it takes very little actual news to move a contract priced at 2c.
The bottom of the board is a long tail of celebrity and novelty contracts, including Michelle Obama, Jon Stewart, Mark Cuban, and Stephen A. Smith, that absorb tens of millions in volume while pricing at or near zero. Volume on those names measures attention, not probability. Several of them carry more cumulative volume than contenders priced ten times higher, which is the single most useful thing to understand about reading a board this size: dollars traded and implied probability are separate measurements, and at the bottom of a 59-name field they diverge badly. Sorting by price tells you what the market believes. Sorting by volume tells you what the market finds interesting. The 2028 presidential election board is where the general-election matchups price instead.
The 2028 Democratic nominee market resolves to the candidate the Democratic Party formally nominates for president at its 2028 Democratic National Convention, expected in the summer of 2028. The nominee is determined by the pledged-delegate count secured through the primary and caucus calendar and confirmed by the convention roll-call vote. The winning contender's contract pays $1 per share while every other contender resolves to $0. The listed settlement date carries to the November 2028 general election as a buffer, but the outcome is fixed the moment the party confirms its nominee.
The 2028 Democratic nominee race is one leg of a much larger board. The 2028 Republican nominee market prices the other side of the ticket, and which party wins the 2028 presidency prices the general-election outcome directly. The 2028 presidential matchup market is where the two nominee boards meet, pricing specific head-to-head pairings before either party has settled on a name. The Democratic candidacy market is the leading indicator for this page, since a contender has to actually enter before nomination odds mean anything, and it is the fastest place to see the celebrity names sorted from the real ones. The full slate of races sits in the politics market hub.
Resolves to the candidate formally nominated for president by the Democratic Party at its 2028 Democratic National Convention, expected in the summer of 2028. The nominee is determined by the pledged-delegate count secured through the 2028 primary and caucus calendar and confirmed by the convention roll-call vote. The winning contender's contract pays $1 per share; all other contender contracts resolve to $0. The listed market settlement date carries to the November 2028 general election as a buffer, but the outcome is fixed at the party's confirmation of its nominee. If the nomination process is altered, contested, or otherwise voided, the market resolves per each platform's specific rules.
The live board above ranks current cross-platform prices on all 59 priced contenders across Kalshi and Polymarket. As of August 31, 2026, the leader is still under 20c and the top two names sit about 2c apart, so the market is pricing a lead pack rather than a frontrunner.
The market resolves when the Democratic Party formally selects its presidential nominee at the 2028 Democratic National Convention, expected in the summer of 2028. The listed settlement date carries to the November 2028 general election as a buffer, but the outcome is fixed at the party’s confirmation.
Both Kalshi and Polymarket list the 2028 Democratic presidential nominee market, with cross-platform pairs on nearly every leading contender. The board above compares both platforms side by side so you can see exactly where the two prices diverge.
Alexandria Ocasio-Cortez is the most heavily backed name on the board as of August 31, 2026, with Jon Ossoff now second after passing Gavin Newsom, who has settled into third. Her lead narrowed through August. Check the live board above for the current ranking.
Start with the November 3, 2026 midterms, where the Ossoff Georgia Senate race is the most direct 2028 credential on the calendar and the most binary catalyst at the top of the board. Then watch Gavin Newsom exit the California governorship in January 2027 and whether the moderate lane consolidates before the first 2028 nominating contests.