2018Final results
2018 election for Massachusetts's 9th District
U.S. House · Massachusetts
Bill Keating (D) won with 59.4% of the vote, defeating Peter D. Tedeschi (R) by 18.8 points.
Bill KeatingDemocrat · winner
59.4%192,347
Peter D. TedeschiRepublican
40.6%131,463
323,928 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Bill KeatingPeter D. Tedeschi
$1.2M
Raised by the campaign
$856.8K
$569.7K
Spent by the campaign
$856.5K
$1.4M
Cash on hand
$279
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018