Delaware Senate · District 7

Spiros Mantzavinos's Delaware Senate voting record

Democratic
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Spiros Mantzavinos (Democratic) is a member of the Delaware Senate for District 7. This page covers the 776 floor roll calls held while Spiros Mantzavinos was in office, from Dec. 16, 2024 to July 1, 2026. Votes with the Senate President Pro Tempore on 98% of contested votes. Votes with own party on 99% of party-line votes. 50th percentile in the Delaware Senate from liberal to conservative. Didn't vote on 3% of roll calls. Spiros Mantzavinos sponsored 29 statewide bills this term; 23 passed. Below are the contested votes where Spiros Mantzavinos split from the Senate President Pro Tempore or the party, recent key votes, every roll call with filters, the bills Spiros Mantzavinos sponsored and contact details.

Votes with the Senate President Pro Tempore 98% On 98 contested votes where both voted · 99% on all votes Votes with own party 99% Partisan rank: 9 of 21 in the Senate (tied with 3 others) Didn't vote at roll call 3% 23 of 776 roll calls
Bills passed 23 29 sponsored · 23 became law · Rank 3 of 21 in the Senate (tied with 1 other) Bills that became law 23 of 23 passed · 0 vetoed

Where they sit

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

How these numbers work →
Mantzavinos
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Spiros Mantzavinos'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

Delaware Senate50th percentile
More conservative than 50% of the Delaware Senate.
Most liberalMost conservative
11th most liberal of 21

On the November 3 ballot

Running for Delaware Senate District 7.

Also on the ballot: Chris Rowe (Republican)

Who's on your Nov. 3 ballot for the Legislature →

The scores

How these numbers work →
Votes with the Senate President Pro Tempore
98%
Democrats Republicans 0%100%

Each tick is a current senator, by party; the dot is Spiros Mantzavinos.

On 98 contested votes where both voted99% on all 742 votes where both voted
Votes with own party
99%
Democrats Republicans 65%100%

Each tick is a current senator, by party; the dot is Spiros Mantzavinos.

On 91 party-line votesPartisan rank: 9 of 21 in the Senate (tied with 3 others)8 senators vote with their party more often

Bills

The bills Spiros Mantzavinos sponsored this term and how far they got. Co-sponsors aren’t counted.

How these numbers work →
Bills
Sponsored29
Passed both chambers23
Became law23
Vetoed by the Governor0

Rank by bills passed: Rank 3 of 21 in the Senate (tied with 1 other) · 3 of 15 Democrats (tied with 1 other)

A bill's sponsor is the member legis.delaware.gov lists as its primary sponsor; additional sponsors and co-sponsors aren't counted.

Bills that passed both chambers

BillResultFinal action
SS 1 for SB 120 (153rd General Assembly)
An Act to Amend Titles 18, 29, and 31 of the Delaware Code Relating to Health Insurance		 Became law Sept. 8, 2026
SB 347 (153rd General Assembly)
An Act to Amend Title 6 of the Delaware Code Relating to the Medical Debt Protection Act		 Became law Aug. 31, 2026
SB 340 (153rd General Assembly)
An Act to Amend Title 16 of the Delaware Code Relating to Long Term Care Facilities		 Became law Aug. 31, 2026
SS 1 for SB 196 (153rd General Assembly)
An Act to Amend Title 16 of the Delaware Code Relating to Long-Term Care Facilities		 Became law July 23, 2026
SB 313 (153rd General Assembly)
An Act to Amend Titles 16 and 29 of the Delaware Code Relating to the Protection of Nonprofit Acute Care Hospitals		 Became law July 20, 2026
SB 327 (153rd General Assembly)
An Act to Amend Title 5 and Title 12 of the Delaware Code Relating to Family Trust Companies		 Became law July 13, 2026
SS 2 for SB 19 (153rd General Assembly)
An Act to Amend Title 5 of the Delaware Code Relating to Stablecoins		 Became law July 6, 2026
SS 1 for SB 16 (153rd General Assembly)
Delaware Banking Modernization Act of 2026		 Became law July 6, 2026
SB 18 (153rd General Assembly)
Delaware Money Transmission and Virtual Currency Modernization Act		 Became law July 6, 2026
SB 45 (153rd General Assembly)
An Act to Amend Title 11 of the Delaware Code Relating to Insurance Fraud		 Became law June 24, 2026
SB 316 (153rd General Assembly)
An Act to Amend Title 25 of the Delaware Code Relating to the Attorney Satisfaction of Mortgages and Other Recorded Liens Paid by a Licensed Delaware Attorney		 Became law June 24, 2026
SB 201 (153rd General Assembly)
An Act to Amend Title 24 of the Delaware Code Relating to Real Estate Brokers and Salespersons		 Became law June 1, 2026
SB 247 (153rd General Assembly)
An Act to Amend Titles 9 and 22 of the Delaware Code Relating to County and Municipal Government Deposits of Funds		 Became law May 19, 2026
SS 1 for SB 230 (153rd General Assembly)
An Act to Amend Title 9 of the Delaware Code Relating to Subpoena Power		 Became law March 12, 2026
SB 80 (153rd General Assembly)
An Act to Amend Title 10 of the Delaware Code Relating to the Uniform Public Expression Protection Act		 Became law Sept. 15, 2025
SS 2 for SB 155 (153rd General Assembly)
An Act to Amend Title 29 of the Delaware Code Relating to the Delaware Nursing Home Residents Quality Assurance Commission		 Became law Aug. 25, 2025
SB 170 (153rd General Assembly)
An Act to Amend Title 29 of the Delaware Code Relating to the Council for Services for Aging and Adults with Physical Disabilities		 Became law Aug. 25, 2025
SB 123 (153rd General Assembly)
An Act to Amend Title 12 and Title 13 of the Delaware Code Relating to the Inheritance Rights of Issue and Posthumous Children		 Became law Aug. 21, 2025
SB 203 (153rd General Assembly)
An Act to Amend Title 9 of the Delaware Code Relating to County Tax Levy		 Became law Aug. 12, 2025
SB 151 (153rd General Assembly)
An Act to Amend Title 25 of the Delaware Code Relating to Self-Service Storage Facilities		 Became law July 30, 2025
SS 1 for SB 156 (153rd General Assembly)
An Act to Amend Title 6 of the Delaware Code Relating to the Medical Debt Protection Act		 Became law July 29, 2025
SB 138 (153rd General Assembly)
An Act to Amend Title 16 of the Delaware Code Relating to the Delaware Health Information Network		 Became law July 21, 2025
SB 74 (153rd General Assembly)
An Act to Amend Chapter 76, Title 6 of the Delaware Code Relating to the Delaware Lease-Purchase Agreement Act		 Became law May 22, 2025

Budget projects

Delaware's budget and grant-in-aid bills don't say which legislator asked for an item, so there's no budget figure for Delaware legislators.

Contested votes where they split

2 against the Senate President Pro Tempore; 1 against most of their party.

DateBill and motion Their voteSenate President Pro TemporeMost of their party
July 1, 2026 HS 1 for HB 427: An Act to Amend Title 11 of the Delaware Code Relating to Offenses Involving Deadly Weapons and Dangerous Instruments
Passage		 Yea Nay Yea
April 17, 2025 HB 140: An Act to Amend Title 16 of the Delaware Code Relating to End of Life Options
Passage		 Nay Yea Yea

Recent key votes

Spiros Mantzavinos's most recent key votes: contested or party-line votes that gave the chamber's last word on a whole bill (passage, budgets included, the other chamber's changes or a conference report) or overrode a veto, with what each bill does where a checked explanation exists. The full record is below.

How these numbers work →
  1. July 1, 2026
    Senate
    HB 500: FY 2027 Bond and Capital Improvements Act
    Voted yea Passage · Yeas 17, nays 3

    What the bill does: We don't have a checked plain-language explanation of this bill yet; the vote page links to the official record.

  2. July 1, 2026
    Senate
    HS 1 for HB 427: An Act to Amend Title 11 of the Delaware Code Relating to Offenses Involving Deadly Weapons and Dangerous Instruments
    Voted yeaAgainst the Senate President Pro Tempore Passage · Yeas 14, nays 6

    What the bill does: We don't have a checked plain-language explanation of this bill yet; the vote page links to the official record.

  3. July 1, 2026
    Senate
    SS 1 for SB 116: An Act to Amend Title 25 of the Delaware Code Relating to Right of Redemption
    Voted yea Concurrence in House Amendments · Yeas 16, nays 4

    What the bill does: We don't have a checked plain-language explanation of this bill yet; the vote page links to the official record.

  4. July 1, 2026
    Senate
    HB 59: An Act to Amend Title 11 of the Delaware Code Relating to Release and Publication of the Name and Photograph of Individuals Charged with Crimes or Delinquency
    Voted yea Passage · Yeas 15, nays 5

    What the bill does: We don't have a checked plain-language explanation of this bill yet; the vote page links to the official record.

  5. July 1, 2026
    Senate
    HB 373: An Act to Amend Title 4 and Title 16 of the Delaware Code Relating to Alcohol and Marijuana
    Voted yea Passage · Yeas 18, nays 3

    What the bill does: We don't have a checked plain-language explanation of this bill yet; the vote page links to the official record.

Every roll call

How Spiros Mantzavinos voted on each of the 776 floor roll calls while in office, newest first.

DateVoteTheir vote Most of their partySenate President Pro TemporeYeas–nays
July 1, 2026HB 500: FY 2027 Bond and Capital Improvements Act
Passage		YeaYeaYea17–3
July 1, 2026HS 1 for HB 427: An Act to Amend Title 11 of the Delaware Code Relating to Offenses Involving Deadly Weapons and Dangerous Instruments
Passage		YeaYeaNay14–6
July 1, 2026SS 1 for SB 116: An Act to Amend Title 25 of the Delaware Code Relating to Right of Redemption
Concurrence in House Amendments		YeaYeaYea16–4
July 1, 2026HB 59: An Act to Amend Title 11 of the Delaware Code Relating to Release and Publication of the Name and Photograph of Individuals Charged with Crimes or Delinquency
Passage		YeaYeaYea15–5
July 1, 2026HB 373: An Act to Amend Title 4 and Title 16 of the Delaware Code Relating to Alcohol and Marijuana
Passage		YeaYeaYea18–3
July 1, 2026HB 180: An Act Proposing an Amendment to Article V of the Delaware Constitution Relating to Voting
Passage		YeaYeaYea16–5
July 1, 2026HB 344: An Act to Amend Titles 15 and 29 of the Delaware Code Relating to Campaign Finance
Passage		YeaYeaYea16–5
July 1, 2026HB 448: An Act to Amend Title 15 of the Delaware Code Relating to Campaign Expenditures
Passage		YeaYeaYea14–6
July 1, 2026HB 418: An Act to Amend Title 11 of the Delaware Code Relating to Firearms
Passage		YeaYeaYea15–6
July 1, 2026HB 452: An Act to Amend Title 14 of the Delaware Code Relating to the Delaware Interscholastic Athletic Association and Background Checks for Child-Serving Entities
Passage		YeaYeaYea13–3
July 1, 2026HS 1 for HB 145: An Act to Amend Title 11 of the Delaware Code Relating to Reverse Location and Reverse Keyword Searches and Court Orders
Passage		Not votingYeaYea11–4
June 30, 2026HB 133: An Act to Amend Title 11 of the Delaware Code Relating to Fines, Fees, Restitution, and Other Court-Related Monetary Obligations
Passage		YeaYeaYea16–5
June 30, 2026HS 1 for HB 233: An Act to Amend Title 26 of the Delaware Code Relating to Large Energy Use Facilities
Passage		YeaYeaYea15–6
June 30, 2026HB 310: An Act to Amend Title 30 of the Delaware Code Relating to Business Tax Credits and Deductions
Passage		YeaYeaYea15–6
June 30, 2026HB 430: An Act Proposing an Amendment to Article V of the Delaware Constitution Relating to Elections and Voting
Passage		YeaYeaYea15–6
June 30, 2026SS 1 for SB 300: An Act to Amend Title 11, Title 16, and Title 24 of the Delaware Code Relating to Deadly Weapons Dealers
Concurrence in House Amendments		YeaYeaYea14–7
June 30, 2026HB 458: An Act to Amend Title 16 of the Delaware Code Relating to Backflow
Passage		YeaYeaYea14–6
June 30, 2026HB 462: An Act to Amend Title 14 of the Delaware Code Relating to School Taxes
Passage		YeaYeaYea14–4
June 25, 2026HS 1 for HB 368: An Act to Amend Title 11 of the Delaware Code Relating to Immigration Enforcement and Cooperation
Passage		YeaYeaYea15–6
June 25, 2026HS 2 for HB 94: An Act Amending Titles 10 and 11 of the Delaware Code Relating to Law Enforcement Cooperation in Federal Immigration Enforcement
Passage		YeaYeaYea15–6
June 24, 2026HB 141: An Act to Amend Titles 11 and 24 of the Delaware Code Relating to Firearms
Passage		YeaYeaYea17–4
June 23, 2026HB 348: An Act to Amend Title 29 of the Delaware Code Relating to Electric Vehicles
Passage		YeaYeaYea16–5
June 18, 2026HB 369: An Act to Amend Title 29 of the Delaware Code Relating to the Establishment of the Office of Gun Violence Prevention and Community Safety
Passage		YeaYeaYea15–4
June 16, 2026HB 380: An Act to Amend Title 6 of the Delaware Code Relating to Personal Data Privacy
Passage		YeaYeaYea15–6
June 16, 2026HB 131: An Act to Amend Titles 6 and 16 of the Delaware Code Relating to Pet Stores and Animal Welfare
Passage		YeaYeaYea15–6
June 11, 2026SS 1 for SB 13: An Act to Amend Title 6 and Title 16 of the Delaware Code Relating to Hospital Charity Care and Financial Assistance
Passage		YeaYeaYea17–3
June 11, 2026SS 2 for SB 23: An Act to Amend Title 9, Title 22, and Title 29 of the Delaware Code Relating to Housing Supply and Housing Affordability
Passage		YeaYeaYea14–6
June 9, 2026SB 321: An Act to Amend Title 26 of the Delaware Code Related to Utility Billing
Passage		YeaYeaYea17–3
May 21, 2026SS 1 for SB 300: An Act to Amend Title 11, Title 16, and Title 24 of the Delaware Code Relating to Deadly Weapons Dealers
Passage		YeaYeaYea14–6
May 21, 2026SB 272: An Act to Amend Title 14 and Title 29 of the Delaware Code Relating to Project Labor Agreements for School District Public Works Contracts
Passage		YeaYeaYea15–5
May 14, 2026SB 249: An Act to Amend Title 16 and Title 29 of the Delaware Code Relating to Substance Use Harm Reduction
Passage		YeaYeaYea15–6
May 12, 2026HB 400: An Act to Amend Title 5, Title 6, Title 8, Title 12, and Title 29 of the Delaware Code Relating to Fees and Taxes Administered by the Secretary of State
Passage		YeaYeaYea15–6
May 6, 2026HB 195: An Act to Amend Title 4 of the Delaware Code Relating to Bartending
Passage		YeaYeaYea14–5
April 16, 2026HB 269: An Act to Amend Title 26 of the Delaware Code Relating to Net-Metering and Interconnection Rules
Passage		YeaYeaYea15–5
April 14, 2026SS 1 for SB 3: An Act Proposing an Amendment to Article V of the Delaware Constitution Relating to Voting
Concurrence in House Amendments		YeaYeaYea14–5
March 26, 2026SB 232: An Act to Amend Title 11 of the Delaware Code Relating to Criminal Mischief
Passage		YeaYeaYea17–3
March 12, 2026HB 222: An Act to Amend Title 3 of the Delaware Code Relating to Nutrient Management
Passage		YeaYeaYea14–7
Jan. 28, 2026SB 75: An Act to Amend Title 4 of the Delaware Code Relating to Local Control of Retail Marijuana Stores by Counties
Veto Override		YeaYeaYea14–6
Jan. 28, 2026SB 63: An Act to Amend Title 19 of the Delaware Code Relating to Labor
Veto Override		YeaYeaYea15–6
Jan. 22, 2026SS 1 for SB 230: An Act to Amend Title 9 of the Delaware Code Relating to Subpoena Power
Passage		YeaYeaYea15–1
Jan. 21, 2026SB 179: An Act to Amend Title 11 of the Delaware Code Relating to the Delaware Sentencing Guidelines and Accountability Commission
Passage		Not votingYeaYea14–6
Jan. 13, 2026SB 26: An Act to Amend Title 19 of the Delaware Code Relating to Unemployment Compensation
Passage		YeaYeaYea16–5
Nov. 19, 2025HB 255: An Act to Amend Title 30 of the Delaware Code Relating to Corporate and Personal Income Tax
Passage		YeaYeaYea14–6
June 30, 2025HS 1 for HB 35: An Act Proposing an Amendment to Article I of the Delaware Constitution Relating to Prohibition of the Death Penalty
Passage		YeaYeaYea14–7
June 30, 2025HS 1 for HB 50: An Act to Amend Titles 7 and 29 of the Delaware Code Relating to Energy Assistance
Passage		YeaYeaYea15–6
June 30, 2025HB 119: An Act to Amend Titles 9, 14, and 29 of the Delaware Code Relating to Libraries
Passage		YeaYeaYea14–6
June 30, 2025SB 174: An Act to Amend Title 11 and Title 16 of the Delaware Code Relating to an Animal Abuse Offender List
Concurrence in House Amendments		YeaYeaYea15–6
June 30, 2025HB 37: An Act to Amend Title 6 of the Delaware Code Relating to Public Accommodations
Passage		YeaYeaYea15–6
June 30, 2025HS 2 for HB 70: An Act to Amend Titles 16 and 25 of the Delaware Code Relating to Lead-Based Paint
Passage		YeaYeaYea15–6
June 30, 2025HB 210: An Act to Amend Titles 3, 7, and 16 of the Delaware Code Relating to the Environment
Passage		YeaYeaYea15–6
June 30, 2025SB 159: An Act to Amend Title 26 of the Delaware Code Relating to Public Utilities
Concurrence in House Amendments		YeaYeaYea15–6
June 30, 2025HB 153: An Act to Amend Title 11 of the Delaware Code Relating to Arrest and Detention
Passage		YeaYeaYea17–4
June 30, 2025HB 182: An Act to Amend Title 11 of the Delaware Code Relating to Law Enforcement Agency Agreements
Passage		YeaYeaYea17–3
June 30, 2025HB 142: An Act to Amend Title 11 of the Delaware Code Relating to Arrests
Passage		YeaYeaYea16–5
June 30, 2025HS 2 for HB 105: An Act to Amend Title 19 of the Delaware Code Relating to Employment Practices
Passage		YeaYeaYea16–4
June 30, 2025HS 1 for HB 91: An Act to Amend Title 14 of the Delaware Code Relating to School Meals
Passage		YeaYeaYea16–5
June 30, 2025HB 205: An Act to Amend Titles 10, 11, 18, 24, and 29 of the Delaware Code Relating to Healthcare Services
Passage		YeaYeaYea15–6
June 26, 2025HS 2 for HB 116: An Act to Amend Title 26 of the Delaware Code Relating to Public Utility Rates
Passage		YeaYeaYea15–6
June 26, 2025HB 225: FY '26 Budget Bill
Passage		YeaYeaYea18–3
June 25, 2025HS 1 for HB 154: An Act to Amend Title 16 of the Delaware Code Relating to Gun Safety Equipment
Passage		YeaYeaYea15–6
June 25, 2025SS 1 for SB 130: An Act to Amend Title 7 of the Delaware Code Relating to Expanded Polystyrene Foam Products
Passage		YeaYeaYea17–4
June 24, 2025HB 36: An Act to Amend Title 2, Title 6, Title 9, Title 10, Title 14, Title 19, Title 20, Title 24, Title 25, and Title 29 of the Delaware Code Relating to…
Passage		YeaYeaYea15–6
June 24, 2025HS 1 for HB 50: An Act to Amend Titles 7 and 29 of the Delaware Code Relating to Energy Assistance
Passage		YeaYeaYea15–6
June 18, 2025HB 175: An Act to Amend Title 7 of the Delaware Code Relating to the Department of Natural Resources and Environmental Control Fees and Assessment and to Authorize…
Passage		YeaYeaYea15–5
June 18, 2025HB 164: An Act to Amend Titles 21 and 30 of the Delaware Code Relating to Motor Vehicles
Passage		YeaYeaYea16–4
June 17, 2025SB 145: An Act to Amend Title 19 of the Delaware Code Relating to Workers' Compensation Payments
Passage		YeaYeaYea18–2
June 12, 2025SB 174: An Act to Amend Title 11 and Title 16 of the Delaware Code Relating to an Animal Abuse Offender List
Passage		YeaYeaYea15–3
June 10, 2025SB 159: An Act to Amend Title 26 of the Delaware Code Relating to Public Utilities
Passage		YeaYeaYea15–5
June 10, 2025SS 2 for SB 100: An Act Proposing an Amendment to Article I of the Delaware Constitution Relating to the Right to Marry
Passage		YeaYeaYea16–5
May 22, 2025SS 1 for SB 10: Richard ‘Mouse’ Smith Compassionate Release Act
Passage		YeaYeaYea15–5
May 20, 2025SB 24: An Act to Amend Titles 14 and 19 of the Delaware Code Relating to the Public School Employment Relations Act and the Public Employment Relations Act
Passage		YeaYeaYea14–6
May 15, 2025SB 82: An Act to Amend Title 10 of the Delaware Code Relating to Lethal Violence Protective Orders
Passage		YeaYeaYea15–6
May 13, 2025SB 63: An Act to Amend Title 19 of the Delaware Code Relating to Labor
Passage		YeaYeaYea14–7
April 17, 2025HB 140: An Act to Amend Title 16 of the Delaware Code Relating to End of Life Options
Passage		NayYeaYea11–8
April 17, 2025HB 110: An Act to Amend Title 4 of the Delaware Code Relating to the Delaware Marijuana Control Act
Passage		YeaYeaYea16–3
April 15, 2025SB 75: An Act to Amend Title 4 of the Delaware Code Relating to Local Control of Retail Marijuana Stores by Counties
Passage		YeaYeaYea13–8
April 10, 2025SS 1 for SB 3: An Act Proposing an Amendment to Article V of the Delaware Constitution Relating to Voting
Passage		YeaYeaYea16–5
March 11, 2025SS 1 for SB 5: An Act Proposing an Amendment to Article I of the Delaware Constitution Relating to the Right to Reproductive Freedom
Passage		YeaYeaYea15–6
Jan. 30, 2025SB 43: An Act to Amend Title 24 of the Delaware Code Relating to the Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners
Passage		YeaYeaYea16–3

Contested and party-line votes link to their own pages; the rest link to the official record.

Contact, committees and caucuses

Contact

Official page
legis.delaware.gov
Email
spiros.mantzavinos@delaware.gov
Capitol office
P.O. Box 1401 411 Legislative Ave., Dover, DE 19901
302-744-4133

Committees

  • Banking, Business, Insurance and Technology Chair
  • Veterans Affairs Vice chair
  • Capital Improvement
  • Capital Improvement
  • Environment, Energy and Transportation
  • Rules and Ethics
  • Special Property Reassessment

Contact details and committee assignments from Open States' data on the Delaware General Assembly, which it collects from the chambers' websites, as of Oct. 22, 2026.

Source: the Delaware General Assembly's roll-call records and Journals, Dec. 16, 2024 to July 1, 2026. How these numbers work · Corrections