MassVoter.com← Arlington Select Board
Arlington Member
Diane Mahon
At-large · 10 terms in this record
Diane M. Mahon
A monthly email on how they voted, starting in November.
Board years
Your Arlington ballot: 13 quizzes, about a minute each.
Start my ballot →Record at a glance · 2021–2022 Board
On split votes, Mahon voted the same way as…
- Stephen DeCourcey83% (5 of 6)
- John Hurd57% (4 of 7)
- Eric Helmuth43% (3 of 7)
- Len Diggins14% (1 of 7)
How these numbers work
- Counted from the official minutes, for 2021–2022 Board only. Committee meetings and routine votes (adjourning, approving minutes) are not counted.
- Attendance counts the meetings where the minutes list Mahon as present or absent at the start.
- Only votes the minutes record member by member are counted. Voice votes and votes given only as a count (for example 6-3 with no names) are not.
- Percentages are shown only when there are at least 10 meetings or votes to count.
- A split vote is one where at least one member voted yes and another voted no. “In the minority” means on the side with fewer votes; ties are not counted.
- “Whole board” combines every member’s record for the same term.
These numbers describe the record; they are not a grade. A no vote, an abstention or a minority vote is neither good nor bad. MassVoter never rates officials.
In the news
- Select Board Monday: New Vice Chair, Grief awareness month and ‘No Name’ Brook decisionYourArlington · Oct 30, 2025
- How Select Board chair sees the state of our townYourArlington · May 1, 2025
Stories that name Diane Mahon in the headline or opening, newest first, from 25 free news outlets (see the list). Headlines appear as each outlet published them; MassVoter does not write, choose or rate them. Only stories that are free to read are listed.
Disclosure: MassVoter’s founder, Michael Silvia, is the publisher of Fall River Reporter and New Bedford Guide.
Attendance
At the start of 30 of 30 Select Board meetings in 2021–2022 Board.
Missed none.
Every meeting (30)
- Mar 30, 2022 · Regular: Present
- Mar 28, 2022 · Regular: Present
- Mar 21, 2022 · Regular: Present
- Mar 7, 2022 · Regular: Present
- Feb 23, 2022 · Regular: Present
- Feb 7, 2022 · Regular: Present
- Jan 24, 2022 · Regular: Present
- Jan 10, 2022 · Regular: Present
- Dec 20, 2021 · Regular: Present
- Dec 6, 2021 · Regular: Present
- Nov 29, 2021 · Regular: Present
- Nov 22, 2021 · Regular: Present
- Nov 8, 2021 · Regular: Present
- Oct 28, 2021 · Regular: Present
- Oct 25, 2021 · Regular: Present
- Oct 13, 2021 · Regular: Present
- Sep 27, 2021 · Regular: Present
- Sep 20, 2021 · Regular: Present
- Sep 13, 2021 · Regular: Present
- Aug 16, 2021 · Joint: Present (Diane Mahon stepped aside (recused) for at least one vote.)
- Aug 9, 2021 · Regular: Present
- Jul 19, 2021 · Regular: Present
- Jun 21, 2021 · Regular: Present
- Jun 9, 2021 · Regular: Present
- May 26, 2021 · Regular: Present
- May 19, 2021 · Regular: Present
- May 10, 2021 · Regular: Present
- May 3, 2021 · Regular: Present
- Apr 26, 2021 · Regular: Present
- Apr 12, 2021 · Regular: Present
Votes where members disagreed · 2021–2022 Board
Mar 30No action for warrant article 19Motion: Mr. Diggins moved no action for warrant article 19.Passed 3–2 · Mahon: Yes
March 30, 2022: No action for warrant article 19
Mr. Diggins moved no action for warrant article 19.
Voted: Yes
Yes: DeCourcey, Diggins, MahonNo: Helmuth, Hurd
From the minutes
“Mr. Diggins moved no action for warrant article 19. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: no Mr. Diggins: yes Mr. Helmuth: no Mrs. Mahon: yes Mr. DeCourcey: yes (SO VOTED 3-2).” (Motion: Diggins)
Mar 21Approve: National Grid Petition/Ravine StreetMotion: Mr. Helmuth moved approval.Passed 4–0 · Mahon: Yes
March 21, 2022: Approve: National Grid Petition/Ravine Street
Mr. Helmuth moved approval.
Voted: Yes
Yes: Diggins, Helmuth, Hurd, MahonStephen DeCourcey stepped aside (recused) and is not shown as voting (the minutes say: “Mr. DeCourcey recused himself from the following public hearings regarding National Grid and turned o”).
From the minutes
“Mr. Helmuth moved approval. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes SO VOTED (4-0).” (Motion: Helmuth)
Mar 21Favorable action: Article 26 Endorsement of CDBG ApplicationMotion: Mr. Hurd moved favorable action.Passed Unanimous, 5 present · Mahon: Yes
March 21, 2022: Favorable action: Article 26 Endorsement of CDBG Application
Mr. Hurd moved favorable action.
Voted: Yes
This vote included Mr. Chapdelaine (yes), who is not on the Select Board; the minutes’ count (6-0) includes this vote. Only the Select Board members’ votes are shown.
From the minutes
“Mr. Hurd moved favorable action. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes Mr. DeCourcey: yes Mr. Chapdelaine yes SO VOTED (6-0).” (Motion: Hurd)
Mar 7Favorable action: Articles for ReviewMotion: Mr. Hurd moved favorable action.Passed 3–2 · Mahon: No
March 7, 2022: Favorable action: Articles for Review
Mr. Hurd moved favorable action.
Voted: No
Yes: Diggins, Helmuth, HurdNo: DeCourcey, Mahon
From the minutes
“Mr. Hurd moved favorable action. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: no Mr. DeCourcey: no SO VOTED (3-2).” (Motion: Hurd)
Feb 23Approve: Approval of Sale of $196,000 Sewer Bond dated…Motion: Mr. Helmuth moved approval.Passed 4–0 · Mahon: Yes
February 23, 2022: Approve: Approval of Sale of $196,000 Sewer Bond dated February 28, 2022 to
Mr. Helmuth moved approval.
Voted: Yes
Yes: Diggins, Helmuth, Hurd, MahonThe roll call does not list Stephen DeCourcey, who was at the meeting; this member is not shown as voting.
From the minutes
“Mr. Helmuth moved approval. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes.” (Motion: Helmuth)
Feb 23Amend the motion by adding "exclude any current members…Motion: Mr. Hurd moved to amend the motion by adding "exclude any…Passed 4–1 · Mahon: Yes
February 23, 2022: Amend the motion by adding "exclude any current members of a police department or any former members of the Arlington Police Department."
Mr. Hurd moved to amend the motion by adding "exclude any current members of a police department or any former members of the Arlington Police Department."
Voted: Yes
Yes: DeCourcey, Helmuth, Hurd, MahonNo: Diggins
From the minutes
“Mr. Hurd moved to amend the motion by adding "exclude any current members of a police department or any former members of the Arlington Police Department." A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: no Mr. Helmuth: yes Mrs. Mahon: yes Mr. DeCourcey: yes SO VOTED (4-1).” (Motion: Hurd)
Jan 10Approve: National Grid Petition/Oakland AvenueMotion: Mr. Diggins moved approval.Passed 4–0 · Mahon: Yes
January 10, 2022: Approve: National Grid Petition/Oakland Avenue
Mr. Diggins moved approval.
Voted: Yes
Yes: Diggins, Helmuth, Hurd, MahonStephen DeCourcey stepped aside (recused) and is not shown as voting (the minutes say: “Mr. DeCourcey recused himself from the following public hearings and turned over the meeting to Mrs.”).
From the minutes
“Mr. Diggins moved approval. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes SO VOTED (4-0).” (Motion: Diggins)
Jan 10Approval subject to conditions laid out in Engineering Memo…Motion: Mr. Helmuth moved approval subject to conditions laid out in Engineering…Passed 4–0 · Mahon: Yes
January 10, 2022: Approval subject to conditions laid out in Engineering Memo within the public right of way
Mr. Helmuth moved approval subject to conditions laid out in Engineering Memo within the public right of way.
Voted: Yes
Yes: Diggins, Helmuth, Hurd, MahonStephen DeCourcey stepped aside (recused) and is not shown as voting (the minutes say: “Mr. DeCourcey recused himself from the following public hearings and turned over the meeting to Mrs.”).
From the minutes
“Mr. Helmuth moved approval subject to conditions laid out in Engineering Memo within the public right of way. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes SO VOTED (4-0).” (Motion: Helmuth)
Oct 13Approval and revisit this intersection no later than February…Motion: Mr. Diggins moved approval and revisit this intersection no later than…Passed 4–0 · Mahon: Yes
October 13, 2021: Approval and revisit this intersection no later than February 2022
Mr. Diggins moved approval and revisit this intersection no later than February 2022.
Voted: Yes
Yes: Diggins, Helmuth, Hurd, MahonStephen DeCourcey stepped aside (recused) and is not shown as voting.
From the minutes
“Mr. Diggins moved approval and revisit this intersection no later than February 2022. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: yes Mr. Helmuth: yes Mrs. Mahon: yes Mr. DeCourcey: recused SO VOTED (4-0).” (Motion: Diggins)
Oct 13Maintain the number of precincts at 21Motion: Mr. Hurd moved to maintain the number of precincts at 21.Passed 4–1 · Mahon: Yes
October 13, 2021: Maintain the number of precincts at 21
Mr. Hurd moved to maintain the number of precincts at 21.
Voted: Yes
Yes: DeCourcey, Helmuth, Hurd, MahonNo: Diggins
From the minutes
“Mr. Hurd moved to maintain the number of precincts at 21. A roll call vote was taken on the motion by Mr. Heim. Mr. Hurd: yes Mr. Diggins: no Mr. Helmuth: yes Mrs. Mahon: yes Mr. DeCourcey: yes SO VOTED (4-1).” (Motion: Hurd)
Votes with no disagreement (239)
From the Arlington Select Board’s official minutes, posted on the town’s PrimeGov meeting portal (linked from the town’s Agendas and Minutes page). We check every vote against the Select Board members present and quote the exact wording. MassVoter never grades or scores officials. Photos: Arlington Community Media (ACMi) candidate profile and news videos (John Hurd, 2018; Stephen DeCourcey, 2019); Arlington Patch candidate profile (Eric Helmuth, 2021, courtesy of the candidate); YourArlington (Joseph Solomon, June 2026, photo by Marjorie Howard; Diane Mahon, March 2026 candidate profile, photo submitted by the candidate).
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