TOTAL VOLUME:

$134b

24H VOL:

$103,397,351

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,410,176,180

399,592

Markets across

30,097

events

MATCHED EVENTS:

2,622

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Elections
MA-08 Democratic primary margin of victory? (Patrick Roath)
kalshi

MA-08 Democratic primary margin of victory? (Patrick Roath)

Volume:
$6,930

Patrick Roath, ≥2%

 - Kalshi

Patrick Roath, ≥2% - Kalshi

1W

News

Positive

Negative

Neutral

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Vol.

·

Resolved Sep 9, 2026

Closed: Sep 9, 6:47 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

Patrick Roath, ≥2%

View
0%
Yes 0¢No 100¢
100¢
N/A
$6,474
N/A
N/A
$5,866
11mo 6d
No
kalshi

Patrick Roath, ≥6%

0%
Yes 0¢No 100¢
100¢
N/A
$247
N/A
N/A
$212
11mo 6d
No
kalshi

Patrick Roath, ≥4%

0%
2%
Yes 0¢No 100¢
100¢
N/A
$209
N/A
N/A
$208
11mo 6d
No
kalshi

Patrick Roath, ≥8%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
11mo 6d
No
kalshi

Patrick Roath, ≥10%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
11mo 6d
No
Total markets: 5

Description

The same Democratic primary in Massachusetts' 8th district will determine Patrick Roath’s nomination prospects. Voters will decide between candidates, with the result shaping the party’s candidate for the congressional race.

Kalshi

Multiple markets evaluate whether Patrick Roath achieves specific margin thresholds in the 2026 MA-08 Democratic primary. The margin of victory is calculated as Roath’s vote share minus the next highest candidate’s share if Roath wins, or the highest candidate’s share if Roath loses. Margins are assessed without rounding, with each range inclusive of the lower bound and exclusive of the upper bound. Votes for Roath across multiple parties or listings are summed. Markets resolve to Yes if Roath’s margin meets or exceeds the specified percentage thresholds (2%, 4%, 6%, 8%, or 10%).

Frequently asked questions

On Kalshi, the dashboard for the MA-08 Democratic primary margin market tracks real-time odds, price history, and 24-hour volume of $0. It shows how traders on Kalshi are pricing the likelihood of different vote-margin outcomes, giving you a live view of market sentiment for this specific election contest.

This market resolves around Sep 1, 2027, with the outcome confirmed once the official vote count is verifiable from credible public reporting. The final margin will be calculated from certified election results, and the market will settle based on whether it meets the defined threshold — all without any manual intervention or platform discretion.

Key events like candidate debates, endorsement shifts, local scandals, or polling updates can all shift this market. Economic announcements, national political waves, or even weather events affecting voter turnout may also influence trader sentiment. Any development that changes perceptions of voter behavior or likely turnout will be reflected in price movements leading up to Sep 1, 2027.