akashic
1876–2024
12th Bristol District·Massachusetts

Massachusetts 21st State House District has voted Democratic in nine straight presidential cycles.

A heavily Democratic district anchored in Bristol County's urban core

1876 — 2024·38 elections
MA
Latest
D+6
in 2024
Archetype
Democratic loyalist
since the recent cycles
Population
72,538
2024 ACS

Massachusetts 21st State House District, Massachusetts: Democratic loyalist district. In 2024, voted D+6%. Republican peak: R+56 in 1896.

Key facts

2024 presidential margin
D+6MIT Election Lab
Political archetype
Democratic loyalistAkashic typology
Population
72,5382024 5-year
Median household income
$101,7362024 5-year
White (non-Hispanic)
77.0%2024 5-year
Black
6.5%2024 5-year
Hispanic / Latino
7.2%2024 5-year
Peak Democratic margin
D+48 in 1964MIT Election Lab
Peak Republican margin
R+56 in 1896MIT Election Lab
2024 results by constituent county
2 counties · 2 D · 0 R
R+60
D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
D
+5.8%
19,71517,50038,046
D
+15.1%
21,60615,78038,515
D
+8.1%
17,39714,54835,006
D
+10.7%
17,87214,35732,731
D
+14.0%
18,05613,54932,305
D
+16.6%
17,60212,55630,486
D
+23.5%
16,2279,74027,656
D
+29.5%
15,0487,50225,600
D
+12.6%
11,6158,15927,383
R
−1.2%
12,32612,63125,305
R
−11.6%
10,37713,10923,576
R
−7.4%
9,02710,75623,491
D
+13.9%
12,7159,51022,989
D
+2.3%
10,88910,39921,422
D
+22.3%
11,6707,25619,757
D
+47.7%
14,2505,03219,340
D
+16.7%
11,4378,15419,627
R
−27.7%
6,63411,72918,404
R
−16.2%
7,58610,52318,157
D
+8.1%
8,4587,17515,885
D
+3.3%
7,3876,91914,335
D
+6.4%
7,9386,98414,997
D
+5.9%
6,7205,90913,632
R
−2.2%
5,3935,64711,365
R
−9.1%
5,1226,16111,393
R
−47.3%
1,7535,8578,684
R
−51.7%
1,6795,6507,676
R
−10.3%
1,8232,2604,253
O
+1.5%
1,2091,1493,871
R
−33.1%
9872,1363,476
R
−28.7%
1,0431,9873,288
R
−34.0%
8651,8802,989
R
−55.9%
5872,2002,884
R
−17.7%
1,1461,6582,890
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Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Irish
22.9%
English
11.6%
Italian
10.9%
French
5.3%
German
4.6%
American
3.3%
Scottish
1.4%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 42.1 in this county, 39.1 nationally
Male
Age
Female
0.7%
85+
1.3%
2.4%
75–84
3.2%
5.2%
65–74
6.0%
7.1%
55–64
7.5%
6.3%
45–54
6.6%
6.2%
35–44
6.4%
5.9%
25–34
6.0%
4.3%
18–24
4.1%
8.0%
5–17
7.5%
2.6%
<5
2.5%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$101,736
12th Bristol District ranks near the middle of US counties.
12th Bristol District$101,736
Massachusetts$103,960
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.9%
Child poverty is below the national average.
Children under 1810.6%
Working age (18–64)8.1%
Seniors (65+)12.6%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
82.2%
speak English only
Other Indo-European11.4%
Spanish4.6%
Asian & Pacific Islander1.1%
Other languages0.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Catholic & Orthodox
33.9%
Other Christian
3.8%
Mainline Protestant
1.9%
Non-Christian
1.1%
Pentecostal & Holiness
0.8%
Baptist
0.6%
Methodist
0.5%
Source · 2020 US Religion Census. Remaining 57.3% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin of D+28.5, the 12th Bristol District ranks among Massachusetts' most reliably Democratic state house seats, reflecting the dense, working-class urban communities that define its electorate.

The Democratic margin in Massachusetts 21st State House District reached its widest at forty-eight points in 1964. The margin in 2024 was six points — still decisive.

Its loyalty is rooted in its place. Median household income of $101,736, a 77% non-Hispanic-white share, and a population of 72,538 together describe a district whose political habits are deeply settled.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
12th Bristol District, Massachusetts. Akashic. https://akashic.app/sld-lower/25021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did 12th Bristol District, Massachusetts vote in 2024?
In 2024, 12th Bristol District, Massachusetts voted Democratic by 5.8 points (D+6), carried by the Democratic candidate. Out of 38,046 votes cast, 19,715 went Democratic and 17,500 went Republican.
What is 12th Bristol District, Massachusetts's political archetype?
Akashic classifies 12th Bristol District, Massachusetts as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 18 times, Republican 15 times, and other 1 times.
When did 12th Bristol District, Massachusetts last vote Republican?
The most recent presidential election in which 12th Bristol District, Massachusetts voted Republican was 1988.
How many people live in 12th Bristol District, Massachusetts?
12th Bristol District, Massachusetts has a population of 72,538 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in 12th Bristol District, Massachusetts?
Median household income in 12th Bristol District, Massachusetts is $101,736 — above the national median of $80,734. The Massachusetts state median is $103,960.
What is the political history of 12th Bristol District, Massachusetts?
Akashic tracks 38 presidential elections in 12th Bristol District, Massachusetts from 1876 to 2024. Of those, 18 went Democratic and 15 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.