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Delaware Senate Democrats

Meet Your Senator

Spiros Mantzavinos


District 7


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Spiros Mantzavinos

Sen. Spiros Mantzavinos represents the Seventh Senate District, which encompasses Elsmere, Greenbank, Marshallton, the Lancaster Pike/Newport Gap Pike areas and portions of Newport.

Raised in Caldwell, New Jersey, Sen. Mantzavinos graduated from James Caldwell High School. He later earned a bachelors’ degrees in economics and political science from Muhlenberg College in Allentown, Pennsylvania, and a master’s degree in political science from the University of Delaware.

Sen. Mantzavinos got his first taste of government service as a legislative assistant and research analyst with the Delaware Senate in the 1990s. He later gained first-hand experience with economic development issues as a vice president of the New Castle County Chamber of Commerce. Subsequently, he worked as a media relations professional for some of Delaware’s largest employers before launching his own communications consulting firm The Mantzavinos Group.

In addition to running his own small business, Sen. Mantzavinos has taught courses as an adjunct instructor at Wilmington University. He previously served as a member of the Parish Council at Holy Trinity Greek Orthodox Church in Wilmington, an organizer of the annual Holy Trinity Greek Festival and volunteered as a church youth group advisor. He also previously served on the board of the Claymont Community Center, as treasurer of the Delaware Press Association, as president of the Delaware Chapter of the Public Relations Society of America and as Sunday school teacher.

He currently serves as chair of the Senate Banking, Business, Insurance & Technology Committee, vice chair of the Senate Veterans Affairs Committee, and a member of the Senate Environment, Energy & Transportation and Rules & Ethics committees. He also holds a seat on the Joint Capital Improvement Committee.

Sen. Mantzavinos lives in the Westgate Farms neighborhood with his wife Megan and their daughters Sophia and Katherine.

Family

Wife: Megan; Daughters: Sophia and Katherine

Education

James Caldwell High School, Class of 1986; Bachelor’s degree, Economics and Political Science, Muhlenberg College, 1990; Master’s degree, Political Science, University of Delaware, 1994

Occupation

Full-time legislator

Legislative Service:

Senate, 2020 to present

Committees:

Legislative Highlights


Senate Bill 156


Medical debt can happen to anyone at any time. During the 152nd General Assembly, Sen. Spiros Mantzavinos and Rep. Kim Williams passed Senate Bill 8 and 99 that offered reasonable payment plans to patients, and also limited the sale of […]

Senate Bill 156

Senate Bill 267


As chair of the Senate Banking, Business & Insurance Committee, Sen. Mantzavinos successfully passed legislation to help make prescription drugs more affordable for thousands of Delawareans. Passed unanimously by both the Delaware Senate and House, Senate Bill 267 set new […]

Senate Bill 267

House Bill 54


The Office of Suicide Prevention was established in 2025 through the passage House Bill 54. Introduced by Rep. Eric Morrison and co-sponsored by Sen. Spiros Mantzavinos and Speaker Melissa Minor-Brown, this legislation creates a comprehensive, centralized, and proactive approach to […]

House Bill 54

Senate Bill 80


Strategic lawsuits against public participation (SLAPPs) commonly result in defamation, invasion of privacy, and nuisance complaints that weaponize legal action. These lawsuits can stifle public participation in the political process, which heavily affects how state government operates.  With bipartisan support […]

Senate Bill 80

Mentions


General Assembly Votes to Establish Auto Insurance Task Force

FOR IMMEDIATE RELEASE | June 27, 2025Contact: Alexandra Mavridis, alexandra.v.mavridis@delaware.gov Sarah Fulton, sarah.fulton@delaware.gov DOVER — Senator Spiros Mantzavinos introduced legislation that would establish a task force to examine auto insurance rates. Senate Concurrent Resolution 111 creates the Automobile Insurance Reform […]

General Assembly Votes to Establish Auto Insurance Task Force

Mantzavinos Seeks to Update Medical Debt Protection Act

FOR IMMEDIATE RELEASE | May 21, 2025Contact: Sarah Fulton (302) 401-1114 DOVER — Sen. Spiros Mantzavinos and Rep. Kim Williams introduced consumer protection legislation on Tuesday that would prohibit medical debt buyers from communicating with or reporting medical debt information to any consumer reporting […]

Mantzavinos Seeks to Update Medical Debt Protection Act