2016 Massachusetts U.S. House District 9 Election

Massachusetts · 5 candidates · See every 2016 U.S. House race

Who won the 2016 Massachusetts U.S. House District 9 Election?

William R. Keating won the 2016 Massachusetts U.S. House District 9 Election. William R. Keating received 211,790 popular votes (52.47%). The main challenger was Mark C. Alliegro (31.66%).

See the full head-to-head between Keating and Alliegro

Keating +20.8 pts · won by 83,987 votes

William R. Keating DemocraticWINNER52.47%

211,790 votes

Mark C. Alliegro Republican31.66%

127,803 votes

Paul J. HarringtonIndependent6.5%

26,233 votes

Christopher D. Cataldounenrolled2.07%

8,338 votes

Anna Grace Raducunenrolled1.32%

5,320 votes

Other candidates received the remaining 6.0% of the popular vote; only the leading candidates are individually recorded for this election.

Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.