Former member of Congress · last served 116th Congress

Michael B. Enzi

REPUBLICAN U.S. Senator · WyomingSenate 1997–2021

Michael Enzi was a Republican U.S. senator from Wyoming, first elected to Congress in 1997, who voted with most Republicans on 90% of the 112th Congress’s yes/no votes and sponsored 3 bills that became law (113th–116th Congress).

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131Bills & resolutions sponsored113th–116th Congress (excludes amendments)

6Passed a chamberof 89 substantive bills (excludes resolutions and ceremonial bills)

3Became law2 substantive + 1 ceremonial · 113th–116th Congress

25Broke with partyof 248 yes/no votes, 112th (10.1%)

3Missed votesof 251 roll calls, 112th (1.2%)

—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

YeaOn Passage of the Bill — American Taxpayer Relief Act of 2012
Jan 1, 2013 · Bill Passed
NayOn the Nomination — Nomination vote
Dec 30, 2012 · Nomination Confirmed
NayOn the Nomination — Nomination vote
Dec 30, 2012 · Nomination Confirmed
NayOn Passage of the Bill — Disaster Relief Appropriations Act, 2013
Dec 28, 2012 · Bill Passed
YeaOn the Amendment — Disaster Relief Appropriations Act, 2013
Dec 28, 2012 · Amendment Rejected

5 most recent bills

S. 4684 A bill to designate the facility of the United States Postal Service located at 440 Arapahoe Street in Thermopolis, Wyoming, as the "Robert L. Brown Post…
Dec 30, 2020 · Became Public Law No: 116-268.
S. 1681 Advancing Education on Biosimilars Act of 2020
Dec 18, 2020 · Held at the desk.
S. 3287 CFO Vision Act of 2020
Dec 17, 2020 · Held at the desk.
S. 2765 Bipartisan Congressional Budget Reform Act
Dec 15, 2020 · By Senator Enzi from Committee on the Budget filed written report. Report No. 116-325. Additional views filed.
S.Res. 743 A resolution supporting the goals and ideals of National Retirement Security Month, including raising public awareness of the various tax-preferred retirement…
Oct 1, 2020 · Submitted in the Senate, considered, and agreed to without amendment and with a preamble by Unanimous Consent. (consideration: CR S6031; text: CR S6029)

Top bills sponsored

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

Elections Sen. Enzi has won

Sen. Enzi has won 4 U.S. Senate elections (1996, 2002, 2008, 2014). Of the contested races, margins ran from 11.8 to 53.9 points.

Democratic winRepublican winseat changed partyunopposed

Elections won4 in the data (1976–2024); losses are not listed

Closest win: 11.8 points1996, WY Senate

Won an open seat or took one from the other party1 of 4 elections (open seat or changed party)

Seat history, Wyoming Senate (class 2)Winners in regular elections, most recent three: Alan Simpson (R) 1978–1990 → Michael B. Enzi (R) 1996–2014 → Cynthia M. Lummis (R) 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 Wyoming done while Sen. Enzi served?

2005 to 2019 in Wyoming: 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 down 1.7 points.

Typical household income · after inflation

Wyoming: $74.6K in 2005 → $80.0K in 2019

Wyoming up 7%U.S. up 8%

Share of people below the poverty line

Wyoming: 9.5% in 2005 → 10.1% in 2019

Wyoming about the sameU.S. down 1.0 points

Share of workers looking for a job

Wyoming: 5.3% in 2005 → 3.6% in 2019

Wyoming down 1.7 pointsU.S. down 2.4 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 Wyoming during Enzi’s time representing it (1997 to 2021). It does not say what the member did or caused. It is not a score, and PORKER never ranks members on it.

Survey years start at 2005. The yearly estimates for Wyoming begin in 2005, so 1997 to 2004 are not shown. No 2020 yearly estimate exists.

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 35 bills sponsored.

Record	Bills	Source
Bills sponsored	35	Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them →
With a CBO cost estimate listed	3	See the 3 →
With a committee report listed	3	See the 3 →

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.

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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.