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Former member of Congress · last served 115th Congress

Official portrait of Rep. Niki Tsongas

Niki Tsongas

DEMOCRAT U.S. Representative · MassachusettsHouse 2007–2019 (MA-5, MA-3)

Niki Tsongas was a Democratic U.S. representative from Massachusetts, first elected to Congress in 2007, who voted with most Democrats on 96% of the 112th Congress’s yes/no votes and sponsored 1 bill that became law (113th–115th Congress).

22Bills & resolutions sponsored113th–115th Congress (excludes amendments)
3Passed a chamberof 22 substantive bills (excludes resolutions and ceremonial bills)
1Became law1 substantive + 0 ceremonial · 113th–115th Congress
24Broke with partyof 628 yes/no votes, 112th (3.8%)
29Missed votesof 658 roll calls, 112th (4.4%)
—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. Tsongas has won

Rep. Tsongas has won 5 U.S. House elections (2008–2016). Of the contested races, margins ran from 12.6 to 50.9 points.

010204060Margin of victory, points (axis starts at 0)2008, MA-5: won by 50.9 points2008MA-52010, MA-5: won by 12.6 points20102012, MA-3: won by 30.7 points2012MA-32014, MA-3: won by 24.9 points20142016, MA-3: won by 35.9 points2016
Democratic winRepublican winseat changed partyunopposed
Elections won5 in the data (1976–2024); losses are not listed
Closest win: 12.6 points2010, MA-5
Won an open seat or took one from the other party0 of 5 elections (open seat or changed party)
Seat history, Massachusetts’s 3rd districtWinners, most recent three: James P. McGovern (D) 1996–2010 → Niki Tsongas (D) 2012–2016 → Lori Trahan (D) 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 Massachusetts’s 3rd district done while Rep. Tsongas served?

2013 to 2018 in MA-3: typical household income was up 7% after inflation, the share of people below the poverty line was down 2.2 points, and the share of workers looking for a job was down 2.8 points.

Typical household income · after inflationMassachusetts $100.0KMA-3 $97.1KU.S. $77.6K
MA-3: $90.6K in 2013 → $97.1K in 2018
MA-3 up 7%Massachusetts up 11%U.S. up 10%
Share of people below the poverty lineU.S. 13.1%MA-3 10.0%Massachusetts 10.0%
MA-3: 12.2% in 2013 → 10.0% in 2018
MA-3 down 2.2 pointsMassachusetts down 2.0 pointsU.S. down 2.7 points
Share of workers looking for a jobMA-3 6.0%U.S. 4.9%Massachusetts 4.8%
MA-3: 8.8% in 2013 → 6.0% in 2018
MA-3 down 2.8 pointsMassachusetts down 3.0 pointsU.S. down 3.5 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 Massachusetts’s 3rd district during Tsongas’s time representing it (2013 to 2019). It does not say what the member did or caused. It is not a score, and PORKER never ranks members on it.

One set of district lines. MA-3 was redrawn in 2012 and again in 2022 (the survey year the new lines first appear), but every survey year in Tsongas’s term so far (2013 to 2018) uses the same lines, so they can be compared. 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

115th Congress. What Congress.gov lists for the 5 bills sponsored.

RecordBillsSource
Bills sponsored5Source: Congress.gov member record, PORKER copy of October 26, 2026 ↗ See them →
With a sponsor’s constitutional-authority statement5See the 5 →
With a CBO cost estimate listed2See the 2 →
With a committee report listed2See the 2 →
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.