Connecticut State Senate seat · lines in effect since 2022
Connecticut Senate District 9
A district of about 106,000 people, 43% of adults with a bachelor's degree. It votes D+16.1 relative to the nation for president.
Where it sits among all 36 seats
Every Connecticut State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2022 | 2026 | |
|---|---|---|
| Connecticut State Senate | D+11.2 | D+31.0 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Connecticut Secretary of the StateUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 36 seats. Small marks are other seats in Connecticut. The black marker is District 9.
Higher than 57% of seats.
Higher than 63% of seats.
Lower than 71% of seats.
Higher than 57% of seats.
Higher than 89% of seats.
Denser than 69% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.
District 2222% Hispanic · 45% college gradsD+20.7Held DDistrict 14
47% college gradsD+6.8Held DDistrict 21
42% college gradsD+1.5Flipped DDistrict 3
23% Hispanic · 35% college gradsD+24.9Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Matt Lesser (D)
2023– · Won 2022 by 11.2, 2024 unopposed, 2026 by 31.0
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)