2026 results · Massachusetts · Massachusetts 4th District
Jake Auchincloss, the Democrat, wins re-election in Massachusetts's 4th District
Kamala Harris carried the district by 19.6 points in 2024; this year's count is a 13.1-point move toward the Democrats.
| Candidate | Votes | Share | Share of the vote |
|---|---|---|---|
| Jake AuchinclossDemocrat, incumbent | 192,666 | 66.4% | |
| Thomas StalcupRepublican | 97,595 | 33.6% |
Called by Call the Map, Nov 4, 10:46 AM EST · 96% counted.
About 96% of the expected vote counted290,261 votesCount last changed Nov 7, 1:08 PM EST · checked Nov 7, 5:03 PM ESTSource: the official state and county counts, gathered by civicAPI
The map
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About the seat
Massachusetts's 4th District takes in all or part of 5 counties. The Democrats held it before this election. Its voters went D+19.6 for president in 2024. Its move from that vote, 13.1 points toward the Democrats, ranks 3 of 5 among the state's districts, counting from the largest move toward the Democrats.
- 2024 president
- D+19.6
- Move from 2024, rank in state
- 3 of 5
- Bristol County43%
- Norfolk County37%
- Middlesex County12%
- Worcester County6%
- Plymouth County2%
Shares are of the votes counted this year. The district was redrawn for 2026 or had no contest in 2024, so no 2024 House race compares like for like.
What the count shows
Added together, the 5 counties compared moved 13.6 points toward the Democrats from the 2024 presidential vote.
The counties compared cast 72% as many votes as in 2024, from 107% in Plymouth County to 69% in Bristol County.
Bristol County moved most: D+0.1 for president in 2024, D+17.4 this year
The 5 counties with the largest moves from the 2024 presidential vote, among those with 2,000 or more votes for president in 2024 and a quarter of that counted. Each line runs from the 2024 margin to this year’s.
2024 president 2026
Bristol County added 21,850 net votes for Auchincloss against the 2024 margin
Across the 5 counties compared, the margin moved by 17,820 votes toward Auchincloss: this year’s lead in votes against the 2024 presidential lead in votes, county by county. The figure counts voters who changed sides and differences in who turned out alike; the count cannot tell them apart.
- Bristol County+21,850 Auchincloss
- Middlesex County+3,827 Stalcup
- Norfolk County+2,150 Stalcup
- Worcester County+1,325 Auchincloss
- Plymouth County+622 Auchincloss
Massachusetts’s ballot
StatewideDemocrats won all 5 of Massachusetts's statewide races.
U.S. HouseBefore the election D 9–0, now D 9–0, counting the leaders in 3 uncalled seats
won leads, still counting changed party. Margins are the leader’s share minus the runner-up’s, in points.
Every count on this page is the official count, from the state and its counties. Counts are unofficial until the state certifies them. The 2024 comparison is the presidential vote, Kamala Harris against Donald Trump, on the same ground. Margins are the Democrat minus the Republican, in points of all votes.