---
title: "Massachusetts Democratic Senate Primary Margin of Victory"
canonical_url: https://betcrypto.now/events/massachusetts-democratic-senate-primary-margin-of-victory
status: settled
trading_closes_at: 2026-09-09T22:50:03+00:00
settled_at: 2026-09-01T23:59:00+00:00
total_volume_usd: 110658.09
venues: ["Kalshi", "Polymarket", "Polymarket US"]
categories: ["Politics"]
prices_as_of: 2026-10-29T00:49:03+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/massachusetts-democratic-senate-primary-margin-of-victory
---

# Massachusetts Democratic Senate Primary Margin of Victory

Settled · $110,658 traded · listed on Kalshi, Polymarket, Polymarket US

## Result

**Markey 25–30%** won. Settled 2026-09-01.

## About

The margin of victory is the vote share received by Ed Markey minus the vote share received by the candidate that finishes immediately behind Ed Markey if Ed Markey wins, or the candidate that finishes first if Ed Markey loses. If Ed Markey wins, the margin will be positive; if Ed Markey loses, the margin will be negative; if Ed Markey ties for first place, the margin shall be 0.

Each margin range is inclusive of its lower bound and exclusive of its upper bound, and no rounding shall be applied. For example, for consecutive ranges of 5-6% and 6-7%, a margin of 5.99999% resolves within the 5-6% range, while a margin of exactly 6% resolves within the 6-7% range. If Ed Markey runs under multiple parties or is listed multiple times, votes attributable to the same underlying candidate will be summed.

_From Kalshi's listing._

## Other markets

- Thresholds — 10 outcomes

_Every market's prices are on the event page._

## Open on a venue

- [Kalshi](https://betcrypto.now/go/e/400042?via=md)
- [Polymarket](https://betcrypto.now/go/e/302609?via=md)
- [Polymarket US](https://betcrypto.now/go/e/303598?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or the [JSON API](https://betcrypto.now/api/v1/events/massachusetts-democratic-senate-primary-margin-of-victory).

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