Former member of Congress · last served 113th Congress
Mark Udall
Mark Udall was a Democratic U.S. senator from Colorado, first elected to Congress in 1999, who voted with most Democrats on 94% of the 112th Congress’s yes/no votes.
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.
5 most recent votes
- YeaOn Passage of the Bill — American Taxpayer Relief Act of 2012Jan 1, 2013 · Bill Passed
- YeaOn the Nomination — Nomination voteDec 30, 2012 · Nomination Confirmed
- YeaOn the Nomination — Nomination voteDec 30, 2012 · Nomination Confirmed
- YeaOn Passage of the Bill — Disaster Relief Appropriations Act, 2013Dec 28, 2012 · Bill Passed
- NayOn the Amendment — Disaster Relief Appropriations Act, 2013Dec 28, 2012 · Amendment Rejected
5 most recent bills
- S. 1794 Browns Canyon National Monument and Wilderness Act of 2013Jul 23, 2014 · Committee on Energy and Natural Resources Senate Subcommittee on National Parks. Hearings held. With printed Hearing: S.Hrg. 113-493.
- S.Res. 417 A resolution designating October 30, 2014, as a national day of remembrance for nuclear weapons program workers.Jul 9, 2014 · Resolution agreed to in Senate without amendment and with a preamble by Unanimous Consent.
- S. 2494 Natural Gas Export Promotion Act of 2014Jun 18, 2014 · Read twice and referred to the Committee on Energy and Natural Resources.
- S. 2375 Colorado News, Emergency, Weather, and Sports Act of 2014May 21, 2014 · Read twice and referred to the Committee on Commerce, Science, and Transportation.
- S. 2367 Healthy Kids Outdoors Act of 2014May 21, 2014 · Read twice and referred to the Committee on Health, Education, Labor, and Pensions.
Top bills sponsored
- H.R. 6063 (110th) National Aeronautics and Space Administration Authorization Act of 2008Became law
- S. 278 (112th) Sugar Loaf Fire Protection District Land Exchange Act of 2011Became law
- H.R. 1129 (109th) Pitkin County Land Exchange Act of 2006Became law
- H.R. 1576 (107th) James Peak Wilderness and Protection Area ActBecame law
- H.R. 223 (107th) To amend the Clear Creek County, Colorado, Public Lands Transfer Act of 1993 to provide additional time for Clear Creek County to dispose of certain lands…Became law
- H.R. 49 (110th) To designate the facility of the United States Postal Service located at 1300 North Frontage Road West in Vail, Colorado, as the "Gerald R. Ford, Jr. Post…Became law
- H.R. 5370 (108th) To designate the facility of the United States Postal Service located at 4985 Moorhead Avenue in Boulder, Colorado, as the "Donald G. Brotzman Post Office…Became law
- H.Res. 816 (110th) Congratulating the Colorado Rockies on winning the National League Championship.Passed a chamber
Laws first, then bills that passed a chamber, were reported from committee, or drew the most cosponsors.
Elections Sen. Udall has won
Sen. Udall has won 5 U.S. House elections (1998–2006) and 1 U.S. Senate election (2008). Of the contested races, margins ran from 2.4 to 39.9 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 done while Sen. Udall served?
2009 to 2014 in Colorado: typical household income was about the same after inflation, the share of people below the poverty line was down 0.9 points, and the share of workers looking for a job was down 3.1 points.
Each mini chart has its own scale, fitted to its lines (it does not start at zero), so compare the numbers, not the heights. Oxblood = state, grey = U.S.
While they served, not because of them. This shows what happened in Colorado during Udall’s time representing it (2009 to 2015). It does not say what the member did or caused. It is not a score, and PORKER never ranks members on it.
Colorado’s borders do not change, so every year is comparable. The Census Bureau has no 2020 yearly estimate.
Official records on bills this member sponsored
113th Congress. What Congress.gov lists for the 47 bills sponsored.
| Record | Bills | Source |
|---|---|---|
| Bills sponsored | 47 | Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them → |
| With a CBO cost estimate listed | 1 | See the 1 → |
| With a committee report listed | 1 | See the 1 → |
| With a Congress.gov note | 2 | See the 2 → |
Evidence
- How counted
- Bills where this member is the lead (first-listed) sponsor in the 113th 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 · latest recorded Senate vote Sep 30, 2026 · Sources: Congress.gov, Senate.gov, House Clerk, Appropriations Committee earmark tables. PORKER is non-partisan.