TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Elections
NY-21 Democratic nominee?
kalshi

NY-21 Democratic nominee?

Volume:
$1,056

Blake Gendebien

 - Kalshi

Blake Gendebien - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 24, 2026

Closed: Jun 23, 9:58 PM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Blake Gendebien

View
100%
Yes 100¢No 0¢
100¢
N/A
$595
N/A
N/A
$532
1mo 4d
Yes
kalshi

Stuart J Amoriell

0%
Yes 0¢No 100¢
100¢
N/A
$460
N/A
N/A
$460
1mo 4d
No
kalshi

Andrew Henson

0%
Yes 0¢No 100¢
100¢
N/A
$2
N/A
N/A
$2
1mo 4d
No
kalshi

Paula Collins

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
1mo 4d
No
kalshi

Maylon Haller

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
1mo 4d
No
Total markets: 5

Intro

This market tracks whether Blake Gendebien will secure the Democratic Party nomination for New York's 21st congressional district House seat in the 2026 election cycle. On Kalshi, Gendebien's nomination probability stands at 89.5%, with Andrew Henson at 3.0%. The market resolves based on the official Democratic Party nomination outcome for the NY-21 seat. Watch the Democratic primary process and candidate announcements leading up to the 2026 election cycle to gauge shifts in nomination momentum.

Kalshi

The market resolves to Yes if any of the specified candidates—Stuart J Amoriell, Paula Collins, Blake Gendebien, Maylon Haller, or Andrew Henson—wins the Democratic Party nomination for the 2026 NY-21 House seat. Each candidate's nomination victory independently triggers a Yes resolution for that candidate's market.

Frequently asked questions

The NY-21 Democratic nominee dashboard on Kalshi tracks real-time odds and historical price movements for who will become the Democratic nominee in New York's 21st congressional district. The interface displays current implied probabilities for each candidate, 24-hour trading volume of $769, and cumulative group volume of $1,056. Users can monitor how odds shift as campaign developments unfold, compare candidate probabilities side-by-side, and review price history to identify trends in market sentiment leading up to the Nov 3, 2026 resolution date.

Prediction market odds on Kalshi often diverge from traditional polling because traders incorporate real-time campaign dynamics, fundraising data, endorsements, and insider information that polls may lag in capturing. While polls measure voter preference at a single moment, prediction markets reflect ongoing bets by participants with financial incentive to forecast accurately. For the NY-21 Democratic nominee race, comparing Kalshi odds to recent district-level polling and analyst ratings reveals whether the market is pricing in factors beyond current survey data, such as organizational strength or momentum shifts.

The NY-21 Democratic nominee market resolves on Nov 3, 2026. Resolution is determined by the official outcome of the Democratic nomination process for New York's 21st congressional district, which typically concludes at the party convention or through the primary election system. The market will settle based on which candidate is formally designated as the Democratic nominee by the appropriate party authority or electoral process, ensuring that the contract reflects the actual nominee who will represent the party in the general election.

Key catalysts for NY-21 Democratic nominee odds include candidate endorsements from local officials and national party figures, campaign fundraising reports and spending announcements, debate performances and media coverage, primary election results in neighboring districts, candidate withdrawals or entries, and shifts in voter registration or turnout expectations. Grassroots organizing intensity, union backing, and demographic shifts within the district can also influence market prices. Major national political events or changes in the broader Democratic primary landscape may ripple into district-level races, causing traders to reassess nominee probabilities as the Nov 3, 2026 resolution date approaches.