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Former member of Congress · last served 116th Congress

Official portrait of Sen. Cory Gardner

Cory Gardner

REPUBLICAN U.S. Senator · ColoradoSenate 2015–2021 · House 2011–2015 (CO-4)

Cory Gardner was a Republican U.S. senator from Colorado, first elected to Congress in 2011, who voted with most Republicans on 93% of the 112th Congress’s yes/no votes and sponsored 10 bills that became law (113th–116th Congress).

213Bills & resolutions sponsored113th–116th Congress (excludes amendments)
12Passed a chamberof 170 substantive bills (excludes resolutions and ceremonial bills)
10Became law8 substantive + 2 ceremonial · 113th–116th Congress
45Broke with partyof 656 yes/no votes, 112th (6.9%)
1Missed votesof 658 roll calls, 112th (0.2%)
—Pork: own shareFY2024 earmarks: not in office

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

5 most recent bills

Top bills sponsored

Laws first, then bills that passed a chamber, were reported from committee, or drew the most cosponsors.

Elections Sen. Gardner has won

Sen. Gardner has won 2 U.S. House elections (2010–2012) and 1 U.S. Senate election (2014). Of the contested races, margins ran from 1.9 to 21.7 points.

010204060Margin of victory, points (axis starts at 0)2010, CO-4: won by 11.1 points2010CO-42012, CO-4: won by 21.7 points20122014, CO Senate: won by 1.9 points2014CO Senate
Democratic winRepublican winseat changed partyunopposed
Elections won3 in the data (1976–2024); losses are not listed
Closest win: 1.9 points2014, CO Senate
Won an open seat or took one from the other party2 of 3 elections (open seat or changed party)
Seat history, Colorado’s 4th districtWinners, most recent three: Cory Gardner (R) 2010–2012 → Ken Buck (R) 2014–2022 → Lauren Boebert (R) 2024. Elections shown, not terms; special elections not included.
Seat history, Colorado Senate (class 2)Winners in regular elections, most recent three: Mark Udall (D) 2008 → Cory Gardner (R) 2014 → John W. Hickenlooper (D) 2020. The seat is next on the ballot in 2026.

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. Gardner served?

2015 to 2019 in Colorado: typical household income was up 12% after inflation, the share of people below the poverty line was down 2.1 points, and the share of workers looking for a job was down 1.5 points.

Typical household income · after inflationColorado $94.9KU.S. $80.9K
Colorado: $84.9K in 2015 → $94.9K in 2019
Colorado up 12%U.S. up 9%
Share of people below the poverty lineU.S. 12.3%Colorado 9.3%
Colorado: 11.5% in 2015 → 9.3% in 2019
Colorado down 2.1 pointsU.S. down 2.4 points
Share of workers looking for a jobU.S. 4.5%Colorado 3.7%
Colorado: 5.2% in 2015 → 3.7% in 2019
Colorado down 1.5 pointsU.S. down 1.8 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 Gardner’s time representing it (2015 to 2021). 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.

See the full 20-year record →Source: U.S. Census Bureau, American Community Survey 1-year estimates (tables B19013, B17001, B23001) and BLS CPI-U-RS for inflation, retrieved October 18, 2026. “About the same” means the change is inside the 90% margins of error. Who held the seat: Congress.gov member service records, year level.

Official records on bills this member sponsored

116th Congress. What Congress.gov lists for the 87 bills sponsored.

RecordBillsSource
Bills sponsored87Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them →
With a CBO cost estimate listed10See the 10 →
With a committee report listed5See the 5 →
Evidence
How counted
Bills where this member is the lead (first-listed) sponsor in the 116th 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.

Open full dossier →

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.