DemocratIn office since Nov 2020

Spiros Mantzavinos

Delaware State Senator, District 7 since 2020. Ran in 2 elections between 2020 and 2022, winning 2. Re-elected in 2026. Next on the ballot in 2030.

Delaware State Senator, District 7

Official website Wikipedia

In office: 6 yrs; Since 2020
Bills became law: 47; 59 sponsored, 2025–2026 session
Votes missed: 3.9%; Chamber median 3.1%
With party: 99%; On votes splitting the parties
Last margin: +34.6; Won 2026
Next election: 2030; Nov 5, 2030

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:52 PM ET

Committees

As of 2026-10.

Banking, Business, Insurance and Technology · chair
Veterans Affairs · vice chair
Capital Improvement
Capital Improvement
Environment, Energy and Transportation
Rules and Ethics
Special Property Reassessment

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 59 sponsored · 47 became law

BillIntroCmteSenateHouseLaw

HB 406 AN ACT TO AMEND TITLE 18 OF THE DELAWARE CODE RELATING TO UNFAIR TRADE PRACTICES IN AUTOMOBILE INSURANCE.
Became law Sep 2026

HB 299 AN ACT TO AMEND TITLE 18 OF THE DELAWARE CODE RELATING TO LIFE INSURANCE POLICY EXCLUSIONS AND RESTRICTIONS…
Became law Sep 2026

SB 332 AN ACT TO AMEND TITLE 21 OF THE DELAWARE CODE RELATING TO SPECIAL VANITY LICENSE PLATES.
Became law Sep 2026

SB 120 AN ACT TO AMEND TITLES 18, 29, AND 31 OF THE DELAWARE CODE RELATING TO HEALTH INSURANCE.
Became law Sep 2026

SB 340 AN ACT TO AMEND TITLE 16 OF THE DELAWARE CODE RELATING TO LONG TERM CARE FACILITIES
Became law Aug 2026

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Mantzavinos sits in the Delaware State Senate

Mantzavinos is closer to the center than 73% of the chamber's Democrats.

Closest: Nicole Poore, Jack Walsh, Kyra Hoffner

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:48 PM ET

With Mantzavinos’s party

Votes with the chamber's Democrats99%
Cosponsorships of the other party's bills39%

Black tick: the average of Democrats in the Delaware State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Mantzavinos’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.

Date	Bill	Mantzavinos	Dem. majority	Rep. majority	Result
Jul 1, 2026	HB 59: AN ACT TO AMEND TITLE 11 OF THE DELAWARE CODE RELATING TO RELEASE AND PUBLICATION OF THE…	Yes	Yes	No	Passed 15–5
Jul 1, 2026	SB 116: AN ACT TO AMEND TITLE 25 OF THE DELAWARE CODE RELATING TO RIGHT OF REDEMPTION.	Yes	Yes	No	Passed 16–4
Jul 1, 2026	HB 500: A BOND AND CAPITAL IMPROVEMENTS ACT OF THE STATE OF DELAWARE AND CERTAIN OF ITS…	Yes	Yes	No	Passed 17–3
Jul 1, 2026	HB 344: AN ACT TO AMEND TITLES 15 AND 29 OF THE DELAWARE CODE RELATING TO CAMPAIGN FINANCE.	Yes	Yes	No	Passed 16–5
Jul 1, 2026	HB 452: AN ACT TO AMEND TITLE 14 OF THE DELAWARE CODE RELATING TO THE DELAWARE INTERSCHOLASTIC…	Yes	Yes	No	Passed 13–3

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Mantzavinos was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

202020212022202320242025202620272028Delaware State Senate, District 7

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

Year	Race	Result	Margin	Seat	+/−
2026	Delaware State Senate, District 7	Won	D+34.6	D+18.1	+16.5
2022	Delaware State Senate, District 7	Won	D+17.4	D+25.0	−7.6
2020	Delaware State Senate, District 7	Won	D+2.7	—	—