Elections Intelligence

Massachusetts 4th District

DEFENDED SEATSafe D

Jake Auchincloss (D) has held this seat since 2021 and is running for re-election. Before that: Joseph P. Kennedy III (D).

Jake Auchincloss Incumbent
98.5¢
Party market · checked 2:09 PM ETView on Kalshi ↗
2.7¢
Thomas Stalcup Challenger

FTP Race Signal

FTP Race SignalA composite of market, polling and money. The prediction-market price anchors it; a polling average moves it: the last 30 days, or the three most recent pollsters when fewer polled. Polls paid for by a candidate, party or allied group move 2 points toward the other side and count half. When the three most recent independent pollsters each have the race within three points, it is a Toss-up unless the market is already decisive. Fundraising counts only at a five-to-one gap. Past results are context, not inputs. A rating changes only when the evidence clears the line.

The market prices this seat about where its history left it: a 97-point Democratic hold in 2024, priced at 98.5¢ today.

Safe D
Safe DLikely DLean DToss-upLean RLikely RSafe R
Prior result · Safe DD+97.2 in 2024. Market · Safe DD 98.5¢: traders' price for a Democratic hold. Fundraising · Lean DD 138.34-to-1 in receipts.

No public polls. The market favors Auchincloss.

As of October 12.

Market

BandPRICEToss-up50¢ to 65¢Lean65¢ to 82¢Likely82¢ to 95¢Safe95¢ and above
D 98.5¢

Kalshi party market · checked 2:09 PM ET

View market on Kalshi ↗

Polling

BandPOINTSToss-up0 to 5Lean5 to 10Likely10 to 20Safe20 and above
—

Prior result

BandPOINTSToss-up0 to 5Lean5 to 12Likely12 to 25Safe25 and above
D+97.2

Jake Auchincloss (D)

97.2% to 0.0% · 2024 general election

def. Other candidates (other). Margin verified against retrieved official results.

Fundraising

BandRATIO TO 1Parity1 to 5Lean5 and above
D 138.34 to 1

Raised 2025 to 2026 · thru Aug 12

Jake Auchincloss$3.63M ↗$7.34M cash
Thomas Stalcup$26.2K ↗$1.3K cash

Total receipts in the 2025 to 2026 two-year cycle, through August 12, 2026.

The general election is on November 3, which is 22 days away.