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Former member of Congress · last served 115th Congress

Official portrait of Rep. John J. Duncan, Jr.

John J. Duncan, Jr.

REPUBLICAN U.S. Representative · TennesseeHouse 1987–2019 (TN-2)

John Duncan was a Republican U.S. representative from Tennessee, first elected to Congress in 1987, who voted with most Republicans on 86% of the 112th Congress’s yes/no votes.

43Bills & resolutions sponsored113th–115th Congress (excludes amendments)
2Passed a chamberof 35 substantive bills (excludes resolutions and ceremonial bills)
0Became law113th–115th Congress
93Broke with partyof 650 yes/no votes, 112th (14.3%)
7Missed votesof 658 roll calls, 112th (1.1%)
—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 Rep. Duncan, has won

Rep. Duncan, has won 15 U.S. House elections (1988–2016). Of the contested races, margins ran from 12.5 to 85.7 points.

010204060Margin of victory, points (axis starts at 0)1988, TN-2: won by 12.5 points1988TN-21990, TN-2: won by 61.2 points19901992, TN-2: won by 46.5 points19921994, TN-2: won by 85.7 points19941996, TN-2: won by 42.1 points19961998, TN-2: won by 84.4 points19982000, TN-2: won by 78.7 points20002002, TN-2: won by 59.1 points20022004, TN-2: won by 60.0 points20042006, TN-2: won by 55.4 points20062008, TN-2: won by 56.2 points20082010, TN-2: won by 67.1 points20102012, TN-2: won by 53.8 points20122014, TN-2: won by 49.9 points20142016, TN-2: won by 51.3 points2016
Democratic winRepublican winseat changed partyunopposed
Elections won15 in the data (1976–2024); losses are not listed
Closest win: 12.5 points1988, TN-2
Won an open seat or took one from the other party1 of 15 elections (open seat or changed party)
Seat history, Tennessee’s 2nd districtWinners, most recent three: John Duncan (R) 1976–1986 → John J. Duncan, Jr. (R) 1988–2016 → Tim Burchett (R) 2018–2024. Elections shown, not terms; special elections not included.

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 Tennessee’s 2nd district done while Rep. Duncan served?

2012 to 2018 in TN-2: typical household income was up 11% after inflation, the share of people below the poverty line was down 3.6 points, and the share of workers looking for a job was down 3.4 points.

Typical household income · after inflationU.S. $77.6KTN-2 $68.0KTennessee $65.6K
TN-2: $61.4K in 2012 → $68.0K in 2018
TN-2 up 11%Tennessee up 12%U.S. up 10%
Share of people below the poverty lineTennessee 15.3%U.S. 13.1%TN-2 12.7%
TN-2: 16.3% in 2012 → 12.7% in 2018
TN-2 down 3.6 pointsTennessee down 2.6 pointsU.S. down 2.8 points
Share of workers looking for a jobTennessee 5.5%U.S. 4.9%TN-2 4.5%
TN-2: 7.9% in 2012 → 4.5% in 2018
TN-2 down 3.4 pointsTennessee down 4.0 pointsU.S. down 4.5 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. Teal = district, oxblood = state, grey = U.S.

While they served, not because of them. This shows what happened in Tennessee’s 2nd district during Duncan’s time representing it (1987 to 2019). 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. TN-2 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, 2012 to 2018 (no 2020 yearly estimate), not the full 1987 to 2019.

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

115th Congress. What Congress.gov lists for the 19 bills sponsored.

RecordBillsSource
Bills sponsored19Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them →
With a sponsor’s constitutional-authority statement18See the 18 →
With a CBO cost estimate listed1See the 1 →
With a committee report listed1See the 1 →
Evidence
How counted
Bills where this member is the lead (first-listed) sponsor in the 115th 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 House vote Sep 16, 2026 · Sources: Congress.gov, Senate.gov, House Clerk, Appropriations Committee earmark tables. PORKER is non-partisan.