Former member of Congress · last served 118th Congress
Ken Buck
Ken Buck was a Republican U.S. representative from Colorado, first elected to Congress in 2015.
How we count: “Broke with party” is a yes/no roll call where the member voted against most of their own party on that vote (party as recorded; even splits not counted). “Pork: own share” splits each earmark shared by several members evenly among them.
Recent votes
No recorded roll-call votes in PORKER’s records. Roll-call records start in 2011.
5 most recent bills
- H.R. 5875 No Federal Tax Dollars for Illegal Aliens Health Insurance Act of 2023Dec 17, 2024 · Referred to the Subcommittee on Health.
- H.R. 3954 Water and Agriculture Tax Reform Act of 2023Jul 24, 2024 · ASSUMING FIRST SPONSORSHIP - Mr. Lopez asked unanimous consent that he may hereafter be considered as the first sponsor of H.R. 3954, a bill originally…
- H.R. 4213 Conservation Reserve Enhancement Program Improvement Act of 2023Jun 14, 2024 · ASSUMING FIRST SPONSORSHIP - Ms. Caraveo asked unanimous consent that she may hereafter be considered as the first sponsor of H.R. 4213, a bill originally…
- H.R. 4105 Stop Pills That Kill ActMay 23, 2024 · ASSUMING FIRST SPONSORSHIP - Mr. Joyce (OH) asked unanimous consent that he may hereafter be considered as the first sponsor of H.R. 4105, a bill originally…
- H.R. 895 Combating Organized Retail Crime Act of 2023May 23, 2024 · ASSUMING FIRST SPONSORSHIP - Mr. Joyce (OH) asked unanimous consent that he may hereafter be considered as the first sponsor of H.R. 895, a bill originally…
Top bills sponsored
- H.R. 519 (115th) Water and Agriculture Tax Reform Act of 2018Passed a chamber
- H.R. 725 (115th) Innocent Party Protection ActPassed a chamber
- H.Con.Res. 40 (118th) Expressing support for local law enforcement officers and condemning efforts to defund or dismantle local law enforcement agencies.Passed a chamber
- H.R. 1132 (115th) Political Appointee Burrowing Prevention ActPassed a chamber
- H.Res. 1051 (115th) Providing for consideration of the bill (H.R. 6691) to amend title 18, United States Code, to clarify the definition of "crime of violence", and for other…Passed a chamber
- H.Res. 175 (115th) Providing for consideration of the bill (H.R. 725) to amend title 28, United States Code, to prevent fraudulent joinder.Passed a chamber
- H.Res. 198 (115th) Providing for consideration of the bill (H.R. 1259) to amend title 38, United States Code, to provide for the removal or demotion of employees of the…Passed a chamber
- H.Res. 240 (115th) Providing for consideration of the bill (H.R. 1343) to direct the Securities and Exchange Commission to revise its rules so as to increase the threshold…Passed a chamber
Laws first, then bills that passed a chamber, were reported from committee, or drew the most cosponsors.
Elections Rep. Buck has won
Rep. Buck has won 5 U.S. House elections (2014–2022). Of the contested races, margins ran from 21.2 to 35.5 points.
Full election history for this seat →
Source: MIT Election Data and Science Lab, U.S. House V15 / U.S. Senate V8 (CC0), retrieved 2026-10-18; winners matched to member records by seat and term. Results run through the 2024 elections; nothing from 2026 is shown until it is certified. A margin is a fact about one election, never a score of how well a member represents anyone, and PORKER does not rank members by it.
How has Colorado’s 4th district done while Rep. Buck served?
2015 to 2021 in CO-4: typical household income was up 7% after inflation, the share of people below the poverty line was about the same, and the share of workers looking for a job was about the same.
Each mini chart has its own scale, fitted to its lines (it does not start at zero), so compare the numbers, not the heights. Teal = district, oxblood = state, grey = U.S.
While they served, not because of them. This shows what happened in Colorado’s 4th district during Buck’s time representing it (2015 to 2024). It does not say what the member did or caused. It is not a score, and PORKER never ranks members on it.
Only one set of district lines is shown. CO-4 was redrawn in 2012 and again in 2022, and a redrawn district is a different place. So this card shows only the longest stretch on the same lines during the term, 2015 to 2021 (no 2020 yearly estimate), not the full 2015 to 2024.
Official records on bills this member sponsored
118th Congress. What Congress.gov lists for the 17 bills sponsored.
| Record | Bills | Source |
|---|---|---|
| Bills sponsored | 17 | Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them → |
| With a sponsor’s constitutional-authority statement | 12 | See the 12 → |
| With a CBO cost estimate listed | 0 | None listed |
| With a committee report listed | 1 | See the 1 → |
Evidence
- How counted
- Bills where this member is the lead (first-listed) sponsor in the 118th Congress, read from the stored Congress.gov bill records
- Fields
- cboCostEstimates, committeeReports, constitutionalAuthorityStatementText, notes
- PORKER copy refreshed
- October 26, 2026 (nightly)
Read this first. These are counts of records Congress.gov lists. Many bills never get a CBO estimate or a report, so a zero is not a mark against a member. We never show this as a score.
Data as of Oct 26, 2026 · Sources: Congress.gov, Senate.gov, House Clerk, Appropriations Committee earmark tables. PORKER is non-partisan.