99chambers

Connecticut State Senate seat · lines in effect since 2022

Connecticut Senate District 30

A district of about 112,000 people, 45% of adults with a bachelor's degree. It votes D+0.7 relative to the nation for president.

Stephen Harding (R) · since Nov 8, 2022Flipped in 2026Next election Nov 7, 2028The 2026 race →

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.

D+0.732nd most
Democratic
Most DemocraticMost Republican19th seat · the majority lineDistrict 30

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.

202220242026
Connecticut State SenateR+7.6R+7.2D+3.3

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 30.

Adults with a bachelor's degree45% 60th pct · 15th of 36 in CT

Higher than 60% of seats.

White adults without a degree45% 77th pct · 9th of 36 in CT

Higher than 77% of seats.

Hispanic residents10% 23rd pct · 28th of 36 in CT

Lower than 77% of seats.

Black residents4% 26th pct · 27th of 36 in CT

Lower than 74% of seats.

Asian residents2% 3rd pct · 35th of 36 in CT

Lower than 97% of seats.

People per square mile184 0th pct · 36th of 36 in CT

Least dense of 36 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. 3 of the 4 flipped this year.

District 35
41% college gradsD+4.4Flipped DDistrict 33
46% college gradsD+10.2Held DDistrict 18
37% college gradsD+6.2Flipped DDistrict 7
38% college gradsD+4.6Flipped 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.

  1. Aaron Zimmer (D)
    2027– · Won 2026 by 3.3
  2. Stephen G. Harding (R)
    2023–2027 · Won 2022 by 7.6, 2024 by 7.2

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)