Patrick O'Connor, Massachusetts Senate, First Plymouth and Norfolk District: Voting Record

Where they sit

Every current senator, placed from most liberal to most conservative by how they voted on contested bills.

← Most liberalThe aisleMost conservative →

Votes with DemocratsCrosses party linesVotes with Republicans

Patrick O'Connor's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How these numbers work

Massachusetts Senate89thpercentile

More conservative than 89% of the Massachusetts Senate.

Most liberalMost conservative

5th most conservative of 39

On the November 3 ballot

Patrick O'Connor is the only candidate on the November 3 ballot. (Massachusetts Senate, First Plymouth and Norfolk District)

The scores

How these numbers work →

Votes with the Senate Majority Leader

13%

Each tick is a current senator, by party; the dot is Patrick O'Connor.

On 60 contested votes where both voted75% on all 214 votes where both voted

Votes with own party

80%

Each tick is a current senator, by party; the dot is Patrick O'Connor.

On 86 party-line votesPartisan rank: 38 of 39 in the Senate37 senators vote with their party more often

Bills

The bills Patrick O'Connor sponsored this term and how far they got. Co-sponsors aren’t counted.

How these numbers work →

Bills: Patrick O'Connor
	Bills
Sponsored	138
Passed both chambers	1
Became law	1
Vetoed by the Governor	0

Rank by bills passed: Rank 15 of 40 in the Senate (tied with 8 others) · 5 of 5 Republicans

A bill's sponsor is its primary sponsor as the Legislature records it; co-sponsors aren't counted, and a bill a committee reported in a new draft counts for no one.

Bills that passed both chambers

Bills that passed both chambers: Patrick O'Connor
Bill	Result	Final action
S.2577 Relative to parking fines in the town of Scituate	Became law	July 25, 2026

Budget projects

Massachusetts's budget acts don't name the legislator who asked for an item, so there's no budget figure for Massachusetts legislators.

Contested votes where they split

52 against the Senate Majority Leader; 8 against most of their party.

Contested votes where they split: Patrick O'Connor
Date	Bill and motion	Their vote	Senate Majority Leader	Most of their party
July 30, 2026	H.5469: Promoting transparency and public access in state government Passage to Be Engrossed	Nay	Yea (split)	Nay
July 30, 2026	S.3200: Promoting transparency and public access in state government Amendment	Yea	Nay (split)	Yea
July 23, 2026	S.3178: Relative to economic development in the commonwealth Amendment	Yea	Nay (split)	Yea
July 23, 2026	S.3178: Relative to economic development in the commonwealth Amendment	Nay	Yea (split)	Nay
July 23, 2026	S.3178: Relative to economic development in the commonwealth Amendment	Yea	Nay (split)	Yea
July 23, 2026	S.3178: Relative to economic development in the commonwealth Amendment	Yea	Nay (split)	Yea
July 23, 2026	S.3178: Relative to economic development in the commonwealth Amendment	Yea	Nay (split)	Yea
July 1, 2026	H.5175: Relative to energy affordability, clean power and economic competitiveness Passage to Be Engrossed	Nay	Yea (split)	Nay
July 1, 2026	S.3143: To save people money, repair the climate and grow the economy Amendment	Nay	Yea (split)	Nay
July 1, 2026	S.3143: To save people money, repair the climate and grow the economy Amendment	Yea	Nay (split)	Yea
July 1, 2026	S.3143: To save people money, repair the climate and grow the economy Amendment	Yea	Nay (split)	Yea
July 1, 2026	S.3143: To save people money, repair the climate and grow the economy Amendment	Yea	Nay (split)	Yea
July 1, 2026	S.3143: To save people money, repair the climate and grow the economy Amendment	Nay	Yea (split)	Nay
June 18, 2026	S.3141: Relative to primary care for you Passage to Be Engrossed	Yea	Yea	Nay (split)
June 18, 2026	S.3116: Relative to primary care for you Amendment	Yea	Nay (split)	Yea
June 18, 2026	S.3116: Relative to primary care for you Amendment	Yea	Nay (split)	Yea
June 18, 2026	S.3116: Relative to primary care for you Amendment	Yea	Nay (split)	Yea
May 28, 2026	S.3104: RESPONDING TO THE SUPREME JUDICIAL COURT’S ORDER OF MAY 7, 2026, AND ENHANCING GOVERNMENT TRANSPARENCY Adoption	Nay	Yea (split)	Nay
May 21, 2026	S.4: Making appropriations for the fiscal year 2027 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Sustain the Chair's Ruling	Nay	Yea (split)	Nay
May 21, 2026	S.4: Making appropriations for the fiscal year 2027 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 20, 2026	S.4: Making appropriations for the fiscal year 2027 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 20, 2026	S.4: Making appropriations for the fiscal year 2027 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Yea	Nay (split)
May 20, 2026	S.4: Making appropriations for the fiscal year 2027 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Nay	Nay	Yea (split)
May 7, 2026	S.3072: Promoting rule of law, oversight, trust and equal constitutional treatment Amendment	Yea	Nay (split)	Yea
May 7, 2026	S.3072: Promoting rule of law, oversight, trust and equal constitutional treatment Amendment	Yea	Nay (split)	Yea
May 7, 2026	S.3072: Promoting rule of law, oversight, trust and equal constitutional treatment Amendment	Yea	Nay (split)	Yea
May 7, 2026	S.3072: Promoting rule of law, oversight, trust and equal constitutional treatment Amendment	Yea	Nay (split)	Yea
May 7, 2026	S.3083: Order relative to requesting the opinions of the Honorable Justices of the Supreme Judicial Court on important questions of law relative to promoting rule of… Motion to Suspend the Rules	Yea	Nay (split)	Yea
April 9, 2026	H.5280: Making appropriations for the fiscal year 2026 to provide for supplementing certain existing appropriations and for certain other activities and projects Passage to Be Engrossed	Yea	Yea	Nay (split)
April 9, 2026	H.5350: Modernizing the commonwealth’s cannabis laws Passage to Be Enacted	Nay	Yea (split)	Nay
Feb. 26, 2026	S.2962: To build resilient infrastructure to generate higher-ed transformation Amendment	Yea	Nay (split)	Yea
Feb. 26, 2026	S.2962: To build resilient infrastructure to generate higher-ed transformation Amendment	Yea	Nay (split)	Yea
Feb. 12, 2026	S.2947: Regarding fair housing practices in the Commonwealth Amendment	Yea	Nay (split)	Yea
Jan. 15, 2026	S.2898: Improving campaign finance reporting by state ballot question committees Amendment	Yea	Nay (split)	Yea
Nov. 19, 2025	H.4206: Modernizing the commonwealth’s cannabis laws Passage to Be Engrossed	Nay	Yea (split)	Nay
Nov. 19, 2025	S.2722: Modernizing the commonwealth’s cannabis laws Amendment	Yea	Nay (split)	Yea
Nov. 19, 2025	S.2722: Modernizing the commonwealth’s cannabis laws Amendment	Yea	Nay (split)	Yea
Nov. 19, 2025	S.2722: Modernizing the commonwealth’s cannabis laws Amendment	Yea	Nay (split)	Yea
Nov. 19, 2025	H.4692: Rescinding previous Article V Convention applications Adoption	Yea	Yea	Nay (split)
Nov. 19, 2025	H.4692: Rescinding previous Article V Convention applications Amendment	Yea	Nay (split)	Yea
Nov. 13, 2025	S.2696: Regarding free expression Amendment	Yea	Nay (split)	Yea
Nov. 13, 2025	S.2696: Regarding free expression Amendment	Yea	Nay (split)	Yea
Nov. 13, 2025	S.2696: Regarding free expression Amendment	Yea	Nay (split)	Yea
Nov. 13, 2025	S.2696: Regarding free expression Amendment	Yea	Nay (split)	Yea
Oct. 23, 2025	S.2655: Making appropriations for the fiscal year 2025 to provide for supplementing certain existing appropriations and for certain other activities and projects Amendment	Yea	Nay (split)	Yea
Oct. 23, 2025	H.4240: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions and certain activities of the… Override of Veto	Yea	Yea	Nay (split)
Oct. 23, 2025	H.4240: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions and certain activities of the… Override of Veto	Nay	Yea (split)	Nay
July 24, 2025	S.2558: Facilitating better interactions between police officers and persons with autism spectrum disorder Amendment	Yea	Nay (split)	Yea
June 26, 2025	S.2538: Strengthening health care protections in the Commonwealth Amendment	Yea	Nay (split)	Yea
June 18, 2025	S.2529: Making appropriations for the fiscal year 2025 to provide for supplementing certain existing appropriations and for certain other activities and projects. Amendment	Yea	Nay (split)	Yea
June 18, 2025	S.2529: Making appropriations for the fiscal year 2025 to provide for supplementing certain existing appropriations and for certain other activities and projects. Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 22, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Nay (split)	Yea
May 21, 2025	S.3: Making appropriations for the fiscal year 2026 for the maintenance of the departments, boards, commissions, institutions, and certain activities of the… Amendment	Yea	Yea	Nay (split)
Feb. 26, 2025	H.58: Making appropriations for fiscal year 2025 to provide for supplementing certain existing appropriations and for certain other activities and projects Passage to Be Enacted	Nay	Yea (split)	Nay
Feb. 13, 2025	S.14: Proposed Senate Rules for the 2025-2026 Legislative Session Amendment	Nay	—	Yea (split)

Every roll call

How Patrick O'Connor voted on each of the 237 floor roll calls while in office, newest first.

Every roll call: Patrick O'Connor
Date	Vote	Their vote	Most of their party	Senate Majority Leader	Yeas–nays
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Contested and party-line votes link to their own pages; the rest link to the official record.

Contact, committees and caucuses

Contact

Official page: malegislature.gov
Email: patrick.oconnor@masenate.gov
Capitol office: Room 419, State House 24 Beacon St., Boston, MA 02133
617-722-1646

Committees

Children, Families and Persons with Disabilities Ranking member
Climate Change and Global Warming Ranking member
Education Ranking member
Ethics Ranking member
Housing Ranking member
Judiciary Ranking member
Labor and Workforce Development Ranking member
Transportation Ranking member
Ways and Means Ranking member

Contact details and committee assignments from Open States' data on the Massachusetts Legislature, which it collects from the chambers' websites, as of Oct. 15, 2026.