Colorado's 4th congressional district
Coverage: this seat is included in the 2026 national listing. State candidate coverage class: candidate coverage verified from the state's official list. Absence of candidate rows is not evidence that a race has no candidates — see the coverage ledger.
Candidate source
Candidate source: Colorado Secretary of State — 2026 General Election Official Candidate List (retrieved 2026-09-28). Absence of a candidate row is never evidence that a race has no candidates.
How the candidate list was checked
Rows read from the official source: 404 · published here: 47 · left out by rule: 357 · held back for review: 0. Official 2026 General Election Official Candidate List table. All 8 House districts (01-08) present: 01,02,03,04,05,06,07,08. 9 US Senate candidates (incl. 3 certified write-ins: Donald Willoughby, Will Powers, Ryan Apelbaum). Excluded rows are state/local offices (State House 135, State Senate 46, judicial, RTD, Regents, etc.). Party listed as printed; write-in rows carry status write_in. [Re-fetched same URL later on 2026-09-28 after incidental deletion; page bytes differ upstream (page self-updates) but all 47 federal rows re-parsed byte-identical: 47/47 match, zero add/remove. raw_sha256 and manifest updated to the re-fetched bytes.] Senate rows carry senate_class=2 designation=regular: CO is in the official Senate Class II registry (the state's only scheduled 2026 Senate race), so the seat identity is derived from the registry, not defaulted.
Boundaries and sources
County–district classifications come from official block-assignment files, cross-checked against Census representations; render geometry is display-only.
Current officeholder
Lauren Boebert · Republican · current term began January 3, 2025 (elected November 5, 2024)
Upcoming contests
2026-11-03 — general
Douglas Mangeris · Libertarian Party
Qualified for the general-election ballot
Eileen Laubacher · Democratic Party
Qualified for the general-election ballot
Lauren Boebert · Republican Party
Qualified for the general-election ballot
Luis Galvan · Republican Party
Declared write-in candidacy
Economic profile at this seat’s exact geography
FederalCensus Bureau American Community Survey 2020-2024 (5-year) · survey period 2020-2024 · Congressional District 4 (119th Congress), Colorado
- Median household income$115,239± $1,535
- Poverty rate6.8%± 0.4 ppPopulation for whom poverty status is determined
- Rent burden (30%+ of income on gross rent)51.2%± 1.9 ppRenter-occupied households paying cash rent for which rent burden is computed
- Homeownership rate76.2%± 0.6 ppOccupied housing units
- Bachelor's degree or higher (age 25+)48.1%± 0.8 ppPopulation 25 years and over
Technical definitions (ACS tables)
- Rent burden (30%+ of income on gross rent)
- Renter-occupied households paying cash rent for which rent burden is computed: B25070_001 minus B25070_011 (Not computed)
Census block equivalency files show this state's 119th- and 120th-Congress representations are block-identical, so the 119th-Congress ACS district product binds exactly to this district.
Structural five-year survey conditions — not current monthly conditions. Uncertainties are 90% margins of error: the published ACS margin for median income; Census-formula approximations (ACS handbook ch. 8) for the rates. “Margin unavailable” means the source supplies no usable margin — never zero.
Campaign finances
2025-2026 two-year period (FEC cycle 2026). Committee totals are the FEC’s own candidate-level aggregation — never summed from committee rows here. Independent spending is reported separately and is never part of a candidate’s receipts. An FEC registration is not proof of ballot qualification; candidacy status comes verbatim from the accepted release.
General election · November 3, 2026
“No matching FEC candidate record” means no filing was located — it is never evidence that a candidacy does not exist, and never a ballot-status claim. Candidates’ coverage dates can differ; each row carries its own.
Current officeholder — Congress.gov context
Lauren Boebert · Republican · Colorado · served in 3 Congresses since 2021
Identity verified against the official Congress.gov member record (Bioguide B000825), recorded through 2026-10-04T02:54:23Z. Current officeholding is separate from 2026 candidacy status. Official member website.
Recent housing, employment, energy and infrastructure legislation
From the member's sponsored then cosponsored legislation lists (newest first, limit 30 each), the newest items whose CONFIRMED official legislative subjects intersect {Housing and Community Development, Labor and Employment, Energy, Transportation and Public Works, Water Resources Development} are selected, at most 3 sponsored and 2 cosponsored, 5 total. Items whose relevance cannot be confirmed via the official /subjects endpoint are omitted.
- HR.9979-119 — Freedom to Ship Actsponsor latest action 2026-07-30: Referred to the Committee on Transportation and Infrastructure, and in addition to the Committee on the Judiciary, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned. · subjects: Transportation and Public Works
- HR.9897-119 — Trump-Reagan Election Enforcement Actsponsor latest action 2026-07-23: Referred to the House Committee on Transportation and Infrastructure. · subjects: Transportation and Public Works
- HR.7487-119 — Rural Jobs and Hydropower Expansion Actsponsor latest action 2026-08-27: Placed on the Union Calendar, Calendar No. 676. · subjects: Water Resources Development
- HR.5267-119 — American Franchise Actcosponsor latest action 2026-09-08: Placed on the Union Calendar, Calendar No. 702. · subjects: Labor and Employment
Sponsorship is a record of introduction or support — not passage, effectiveness, or economic impact.
Counties and this district
County boundaries for this seat are not published in this release. Explore individual counties on the county map.