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Connecticut's 1st Congressional District

The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Connecticut actually voted.

Model Connecticut's 1st Congressional District →

Current officeholder

John B. Larson Democratic

2024 result

Democratic D+28.3

2024 votes cast

330,482

Office

U.S. House

Who lives in this district

This district is home to about 717,481 people, median age 40.4, median household income $86,832.

Population

717,481

Median age

40.4

Median household income

$86,832

Bachelor's degree or higher

39.2%

Race & ethnicity: White 57.4% · Black 15.5% · Hispanic 18.2% · Asian 5.8%

Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).

Find your district

Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.

Model Connecticut's 1st Congressional District in five steps

  1. Set the candidates. Name the contenders for the Connecticut's 1st Congressional District (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
  2. Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
  3. Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
  4. Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
  5. Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.

Open Connecticut's 1st Congressional District in the simulator →

Frequently asked

Who represents Connecticut's 1st Congressional District?
John B. Larson (Democratic) currently holds this U.S. House seat.
What was the 2024 result in Connecticut's 1st Congressional District?
D+28.3 — 208,649 Democratic, 115,065 Republican, of 330,482 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.

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