99chambers

Pennsylvania State Senate seat · lines in effect since 2022

Pennsylvania Senate District 4

A district of about 276,000 people, 49% Black, 44% of adults with a bachelor's degree. It votes D+68.3 relative to the nation for president.

Art Haywood (D) · since Nov 4, 2014Next election Nov 5, 2030The 2026 race →

Where it sits among all 50 seats

Every Pennsylvania State Senate 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+68.34th most
Democratic
Most DemocraticMost Republican26th seat · the majority lineDistrict 4

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.

20162018202220242026
U.S. SenateD+40.6D+80.2No raceD+88.4No race
GovernorNo raceD+81.2No raceNo raceNo race
Pennsylvania State SenateNo raceNo raceD+70.0No raceD+76.4

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 50 seats. Small marks are other seats in Pennsylvania. The black marker is District 4.

Adults with a bachelor's degree44% 78th pct · 12th of 50 in PA

Higher than 78% of seats.

White adults without a degree14% 4th pct · 48th of 50 in PA

Lower than 96% of seats.

Hispanic residents5% 43rd pct · 29th of 50 in PA

Lower than 57% of seats.

Black residents49% 94th pct · 4th of 50 in PA

Higher than 94% of seats.

Asian residents3% 53rd pct · 24th of 50 in PA

Higher than 53% of seats.

People per square mile6,132 88th pct · 7th of 50 in PA

Denser than 88% 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 7
54% Black · 41% college gradsD+70.4Not up in 2026District 8
55% Black · 30% college gradsD+68.4Held DDistrict 43
24% Black · 47% college gradsD+56.3Not up in 2026District 3
22% Hispanic · 52% BlackD+81.3Not up in 2026

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. Art Haywood (D)
    2027– · Won 2026 by 76.4
  2. Arthur L. Haywood III (D)
    2023–2027 · Won 2022 by 70.0

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