Leaving office January 1, 2027.Lost re-election in 2026. This page switches to the former-officeholder layout when the term ends.

DemocratIn office until January 1, 2027

David Moon

Maryland State Delegate, District 20 since 2014. Lost re-election in 2026; leaves office in January 2027. Ran in 4 elections between 2014 and 2022, winning 4.

Maryland State Delegate, District 20Born 1979

Official website Wikipedia

In office: 12 yrs; Since 2014
Bills became law: 19; 59 sponsored, 2025–2026 session
Votes missed: 0.4%; Chamber median 2.8%
With party: 100%; On votes splitting the parties
Last margin: +0.7; Won 2022
Elections: 5; 2014–2026

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET

Committees

As of 2026-10.

Audit and Evaluation
Federal Action Oversight
Judiciary
Legislative Policy
Rules and Executive Nominations
Spending Affordability

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

Legislation

2025–2026 session · 59 sponsored · 19 became law

BillIntroCmteHouseSenateLaw

HB 634 Police Training - Autism and Dementia (LEAD Act of 2026)
Autism Spectrum · Became law May 2026

HB 497 Family Law - Temporary and Final Protective Orders - Duration
Abuse · Became law May 2026

HB 216 Criminal Law - Benefits Exploitation
Crimes and Punishments · Became law May 2026

HB 894 Land Use - Transit-Oriented Development - Alterations (Maryland Transit and Housing Opportunity Act)
Administrative Agencies · Became law May 2026

HB 563 Criminal Law - Emergency Response Animal - Prohibited Actions Against
Crimes and Punishments · Became law May 2026

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

Voting record

2025–2026 session · placement by roll-call votes

Where Moon sits in the Maryland House of Delegates

Moon is closer to the center than 16% of the chamber's Democrats.

Closest: Malcolm Ruff, Jheanelle Wilkins, Joseline Peña-Melnyk

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:52 PM ET

With Moon’s party

Votes with the chamber's Democrats100%

Black tick: the average of Democrats in the Maryland House of Delegates.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

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

Date	Bill	Moon	Dem. majority	Rep. majority	Result
Apr 2, 2026	HB 191: Consumer Protection - Retail Transactions for Essential Consumer Goods - Cash Payments	Yes	Yes	No	Passed 99–28
Apr 2, 2026	SB 286: Public Safety - Elevator Inspection Certificates - Searchable Database	Yes	Yes	No	Passed 113–21
Apr 2, 2026	SB 249: Tobacco Product Licensees - Additional Licensure for Electronic Smoking Devices	Yes	Yes	No	Passed 106–30
Apr 2, 2026	HB 1109: Public Health Reform Act	Not voting	Yes	No	Passed 95–18
Apr 2, 2026	SB 290: Baltimore City - Ordinance Enforcement - Fines and Penalties	Yes	Yes	No	Passed 112–24

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

Career

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

201420152016201720182019202020212022202320242025202620272028Maryland House of Delegates, District 20

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	Maryland Delegate District 20	Lost	—	—	—
2022	Maryland House of Delegates, District 20	Won	D+0.7	D+80.3	−79.6
2018	Maryland House of Delegates, District 20	Won	D+1.9	—	—
2014	Maryland House of Delegates, District 20	Won	R+2.5	—	—
2014	Maryland House of Delegates, District 20 (primary)	Won	−5.8	—	—