Traders make Ossoff the early favourite for the Democratic nomination

His nomination contract rose 13 points in a week to 28%, and Kalshi prices him at 25%.

In one line: Ossoff probably falls short of the 2028 Democratic nomination; at 28% on Polymarket and 25% on Kalshi, traders overrate a front-runner two years before the contract resolves.

Traders lifted Jon Ossoff's chance of winning the 2028 Democratic presidential nomination from 15% on 3 Nov to 28% on 10 Nov, +13 points over seven days. Most of it came at once. The contract hit its weekly high of 29% on 4 Nov and sits 1 point below it now, after gaining 1.8 points in the last 24 hours.

That price makes Ossoff the clear leader among the event's listed contracts. Gavin Newsom is next at 9%. Shawn Fain, Abdul El-Sayed and Chelsea Clinton trade at 1%, and Chris Van Hollen and George Clooney at 0%. Kalshi prices the same question at 25%. Two separate books, three points apart, show the rise is shared across venues rather than confined to one.

The price still runs ahead of the race. The contract pays only if Ossoff wins and accepts the nomination, judged by a consensus of official Democratic Party sources, and it resolves on 8 Nov 2028, 729 days away. A 13-point jump in one week carried him from 15% to the field's highest price before a single ballot is cast, and the early leader must hold that place through a whole campaign. In our reading, better than one chance in four for one name, with 729 days to run, leaves too little room for the campaign still to come.

Our reading is that Ossoff probably does not win the 2028 Democratic nomination, and that 28% is a generous price for that chance. The call is wrong, and the two venues' agreement right, if his price passes 50% on both venues or official Democratic Party sources name him the accepted nominee by the contract's resolution on 8 Nov 2028.