Massachusetts 99th State House District, Massachusetts: Realigner district. In 2024, voted D+29%. Republican peak: R+53 in 1924.
Key facts
- 2024 presidential margin
- D+29MIT Election Lab
- Political archetype
- RealignerAkashic typology
- Population
- 22,4282024 5-year
- Median household income
- $130,7392024 5-year
- White (non-Hispanic)
- 69.8%2024 5-year
- Black
- 7.4%2024 5-year
- Hispanic / Latino
- 5.8%2024 5-year
- Peak Democratic margin
- D+46 in 1964MIT Election Lab
- Peak Republican margin
- R+53 in 1924MIT Election Lab
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 7,456 | 4,070 | 11,871 | ||
| D | 8,396 | 3,849 | 12,627 | ||
| D | 6,814 | 3,678 | 11,506 | ||
| D | 6,227 | 4,559 | 10,952 | ||
| D | 6,165 | 4,204 | 10,596 | ||
| D | 6,125 | 3,925 | 10,172 | ||
| D | 5,789 | 3,288 | 9,743 | ||
| D | 5,545 | 2,856 | 9,230 | ||
| D | 4,623 | 3,172 | 9,961 | ||
| D | 4,924 | 4,617 | 9,678 | ||
| R | 4,246 | 4,925 | 9,195 | ||
| R | 3,603 | 4,183 | 9,330 | ||
| D | 4,772 | 4,197 | 9,296 | ||
| D | 4,630 | 4,130 | 8,809 | ||
| D | 4,931 | 2,945 | 8,178 | ||
| D | 5,729 | 2,108 | 7,865 | ||
| D | 4,162 | 3,740 | 7,917 | ||
| R | 2,355 | 4,692 | 7,065 | ||
| R | 2,283 | 4,313 | 6,616 | ||
| R | 2,222 | 3,081 | 5,429 | ||
| R | 2,138 | 2,995 | 5,145 | ||
| R | 2,078 | 2,996 | 5,100 | ||
| R | 1,775 | 2,536 | 4,574 | ||
| R | 1,509 | 2,311 | 3,906 | ||
| R | 1,446 | 2,259 | 3,719 | ||
| R | 461 | 1,780 | 2,503 | ||
| R | 483 | 1,592 | 2,131 | ||
| R | 390 | 592 | 1,009 | ||
| O | 284 | 296 | 904 | ||
| R | 236 | 560 | 863 | ||
| R | 257 | 495 | 796 | ||
| R | 243 | 465 | 746 | ||
| R | 153 | 519 | 707 | ||
| R | 317 | 364 | 699 | ||
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Demographics
Covering a slice of Norfolk County south of Boston, the 4th district delivered a 12.5-point Democratic presidential margin in 2024, reflecting the broader suburban-coastal lean that has defined this stretch of Massachusetts for over a decade.
The unraveling was not abrupt. The Democratic margin in Massachusetts 99th State House District peaked at forty-six points in 1964; it narrowed steadily over the late twentieth century. The 1988 election delivered the district to the Republican party for the first time in many years, by a margin of three points. By 2024, the margin had settled into deep Republican territory.
The economic and demographic context is severe. The median household income of $130,739 is among the lowest at this geographic scale; 7% of residents live below the federal poverty line.
Compare two places, side by side
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4th Norfolk District, Massachusetts. Akashic. https://akashic.app/sld-lower/25099/. Accessed May 20, 2026. License: CC BY 4.0.