Doug Mastriano
Pennsylvania State Senator, District 33 since 2020. Next on the ballot in 2028.
- In office
- 6 yrs
- Since 2020
- Bills became law
- 6
- 93 sponsored, 2025–2026 session
- Votes missed
- 1.2%
- Chamber median 0.0%
- With party
- 97%
- On votes splitting the parties
- Last margin
- +38.0
- Won 2024
- Next election
- 2028
- Nov 7, 2028
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 9:43 AM ET
Committees
As of 2026-10.
- Education · vice chair
- Veterans Affairs and Emergency Preparedness · chair
- Agriculture and Rural Affairs
- Intergovernmental Operations
- Judiciary
- Local Government
- State Government
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Became law Oct 2026
Became law Jul 2026
Became law Jul 2026
Became law Jul 2025
Became law Jun 2025
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Mastriano sits in the Pennsylvania State Senate
Mastriano is closer to the center than 7% of the chamber's Republicans.
Closest: Jarrett Coleman, Dawn Keefer, Scott Hutchinson
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:00 PM ET
With Mastriano’s party
- Votes with the chamber's Republicans97%
- Cosponsorships of the other party's bills16%
Black tick: the average of Republicans in the Pennsylvania State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Mastriano’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Mastriano | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Oct 21, 2026 | HB 2299: An Act amending Titles 18 (Crimes and Offenses) and 42 (Judiciary and Judicial Procedure)… | Yes | Yes | Yes | Passed 43–7 |
| Oct 21, 2026 | HB 2443: An Act providing for Child Victim Recovery Fee; establishing the Child Victim Recovery… | Yes | Yes | Yes | Passed 47–3 |
| Oct 21, 2026 | HB 558: An Act amending the act of April 6, 1951 (P.L.69, No.20), known as The Landlord and Tenant… | No | No | Yes | Passed 36–14 |
| Oct 21, 2026 | HB 369: An Act amending Title 68 (Real and Personal Property) of the Pennsylvania Consolidated… | No | No | Yes | Passed 35–15 |
| Oct 19, 2026 | HB 1935: An Act amending Title 18 (Crimes and Offenses) of the Pennsylvania Consolidated Statutes,… | Yes | Yes | Yes | Passed 45–5 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Mastriano was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
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 |
|---|---|---|---|
| 2024 | Pennsylvania State Senate, District 33 | Won | R+38.0 |
| 2022 | Governor of Pennsylvania | Lost | D+14.8 |
| 2020 | Pennsylvania State Senate, District 33 | Won | R+37.3 |
Source: 99chambers results archive
Seats Mastriano has held
- Pennsylvania State Senate, District 33 · since 2020
Source: 99chambers results archive
Who Mastriano has run against
- Cameron Schroy (D) · 2024 general, won
- Joshua D. Shapiro (D) · 2022 general, lost
- Richard L. Sterner (D) · 2020 general, won
Source: 99chambers results archive
How we know Mastriano
One person, matched across every source we use.
- Open States ocd-person/cda65f80-13e8-463c-88fa-6f5569a599bf
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET