99chambers

Maryland House of Delegates seat · lines in effect since 2022

Maryland Delegate District 13

A district of about 131,000 people, 28% Black, 61% of adults with a bachelor's degree. It votes D+52.6 relative to the nation for president.

Gabriel Moreno (D)Jen Terrasa (D) · since Nov 6, 2018Pam Guzzone (D) · since Nov 8, 2022Next election Nov 5, 2030The 2026 race →

Where it sits among all 71 seats

Every Maryland House of Delegates seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+52.624th most
Democratic
Most DemocraticMost Republican36th seat · the majority lineDistrict 13

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

2022
Maryland House of DelegatesD+44.8

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 71 seats. Small marks are other seats in Maryland. The black marker is District 13.

Adults with a bachelor's degree61% 90th pct · 8th of 71 in MD

Higher than 90% of seats.

White adults without a degree14% 29th pct · 51st of 71 in MD

Lower than 71% of seats.

Hispanic residents12% 70th pct · 22nd of 71 in MD

Higher than 70% of seats.

Black residents28% 64th pct · 26th of 71 in MD

Higher than 64% of seats.

Asian residents16% 93rd pct · 6th of 71 in MD

Higher than 93% of seats.

People per square mile1,916 59th pct · 30th of 71 in MD

Denser than 59% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean.

District 12A
23% Black · 63% college gradsD+52.6CountingDistrict 14
28% Black · 57% college gradsD+46.0Held DDistrict 17
25% Hispanic · 59% college gradsD+57.2Held DDistrict 43B
24% Black · 63% college gradsD+57.6Held D

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Vanessa Atterbeary (D)
    2023– · Won 2022 by 47.1
  2. Pam Lanman Guzzone (D)
    2023– · Won 2022 by 44.8
  3. Jen Terrasa (D)
    2023– · Won 2022 by 44.9

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