SimpleFunctions
KalshiNov 3, 2027541 days left

Will the margin of victory for Democrats in the Massachusetts's 1st District House election be at least 18 percentage points?

By SimpleFunctions· Last verified 11 May 2026Methodology

This contract is priced at 74¢ midpoint on Kalshi. Current book: 70¢ bid, 77¢ ask, 7¢ spread.

Implied probability

74¢
$0 volume
2.3 LAS liquidity

Event outcomes

9

Family volume

$0

Best sibling

Democrats, 12+ pts 93¢

Ticker

KXMIDTERMMOV-MA01D-P18

Market snapshot

Democrats, 18+ pts in market context.

This page tracks the Kalshi contract for Will the margin of victory for Democrats in the Massachusetts's 1st District House election be at least 18 percentage points?. The displayed quote is 74¢ from the visible bid/ask midpoint because the last venue price is zero. In the Will the margin of victory for Democrats in the Massachusetts's 1st District House election be at least family, this outcome ranks #3 of 9 by current quote across 9 sibling outcomes. The indicator bundle was refreshed May 11, 2026, 10:53 PM UTC.

Outcome

Democrats, 18+ pts

Family rank

#3 of 9

Venue

Kalshi

Current quote

74¢

Quote source

Bid/ask midpoint

Timing

Listed until Nov 3, 2027

Reported volume

Family context

9 outcomes · Will the margin of victory for Democrats in the Massachusetts's 1st District House election be at least

Quote range

7¢-93¢

Family leader

Democrats, 12+ pts 93¢

Last updated

May 11, 2026, 10:53 PM UTC · 12m ago

Venue identifier: KXMIDTERMMOV-MA01D-P18. Family volume: .

Price history

74¢ current

+72¢
25¢50¢75¢100¢
May 5, 2026May 10, 2026

Orderbook snapshot

70 / 77¢

Kalshi
7¢ spread
BidSize
70¢112
68¢200
35¢415
34¢200
AskSize
77¢17
78¢100
79¢200
99¢2.0K
99¢130

Contract terms

Resolution, venue, and identifiers.

Resolution rules

If the Democratic Party wins the 2026 U.S. House of Representatives election in Massachusetts's 1st District by 18 percentage points or more, then the market resolves to Yes.

Venue

Kalshi

Closes

Nov 3, 2027

Identifier

KXMIDTERMMOV-MA01D-P18

SF Signal
SF Index
70.88
Regime
neutral

Event family

Will the margin of victory for Democrats in the Massachusetts's 1st District House election be at least.

This view keeps the individual contract next to its sibling outcomes. For long-tail search traffic, this is the useful context: where the current price sits inside the event, how much volume exists around the family, and which outcomes have actual depth.

Total volume

$0

Outcomes

9

Highest price

Democrats, 12+ pts 93¢

Current share

Browse this series

2026 Election Margin of Victory Markets
Per-series collection — every live contract in the KXMIDTERMMOV series on Kalshi, sorted by 24h volume.

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

28.9%

IY (No)

157.5%

Adj IY

71%

CRI

2

Overround

3.4%

LAS

0.10

Regime

neutral

Score

0.5

Full indicator table

28.9%
157.5%
Adj IY
71%
2
Overround
3.4%
LAS
0.10

Related readings

Matched from SimpleFunctions blog, opinions, technical guides, concepts, and learn pages.

Browse library
Opinioncomparison

Kalshi vs Polymarket: Mechanics, Fees, Regulation, Liquidity (2026)

Side-by-side comparison of Kalshi and Polymarket in 2026. Fee math, calibration data, withdrawal speed, and a decision tree for picking the right venue.

Blogmarkets

Kalshi vs Polymarket: Which Prediction Market Should You Trade?

In-depth comparison of Kalshi and Polymarket for prediction market traders. Regulatory structure, liquidity, fees, API tooling, and cross-venue trading with SimpleFunctions.

Blogpolitics

US Midterm Elections 2026 Prediction Markets: Trading the Battle for Congress

A deep‑dive guide for prediction market traders on the 2026 US midterm elections: House and Senate control odds, key races, Trump’s impact, economic and approval scenarios, polling accuracy, and data‑driven trading strategies.

Opinionessay

Prediction market liquidity: why depth matters more than volume for serious traders

Why orderbook depth matters more than volume for prediction market traders. Real Kalshi examples, liquidity scoring framework, and how to avoid slippage.

Opinionanalysis

Market Making on Polymarket: Why Maker Status Cuts Loss Probability by 36 Points — and Why Spreads Persist Anyway

Akey et al.'s most economically significant finding: moving from pure taker to pure maker status reduces the probability of losing money by ~36 percentage points on Polymarket. Resolution-spec risk is why cross-platform spreads persist at 1.5–4.5% and why even Susquehanna and Jump can't fully arb them.

Blogmarkets

Prediction Market Orderbook Analysis: Reading Depth, Spread, and Liquidity

How to read prediction market orderbooks. Binary settlement, spread-as-percentage, depth asymmetry, executable edge calculation, and cross-venue arbitrage analysis.

SimpleFunctions context

Index, screen, query, and monitor.

Open index

How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.