99chambers

California State Assembly seat · lines in effect since 2022

California Assembly District 48

A district of about 456,000 people, 61% Hispanic, 26% of adults with a bachelor's degree. It votes D+20.7 relative to the nation for president.

Blanca Rubio (D) · since Nov 8, 2016Next election Nov 7, 2028The 2026 race →

Where it sits among all 80 seats

Every California State Assembly 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+20.746th most
Democratic
Most DemocraticMost Republican41st seat · the majority lineDistrict 48

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.

202220242026
California State AssemblyD+21.7D+23.6D+38.4

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

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

Who lives here, compared

Grey bars show the spread of all 80 seats. Small marks are other seats in California. The black marker is District 48.

Adults with a bachelor's degree26% 30th pct · 56th of 80 in CA

Lower than 70% of seats.

White adults without a degree11% 22nd pct · 63rd of 80 in CA

Lower than 78% of seats.

Hispanic residents61% 75th pct · 21st of 80 in CA

Higher than 75% of seats.

Black residents3% 44th pct · 45th of 80 in CA

Lower than 56% of seats.

Asian residents19% 73rd pct · 22nd of 80 in CA

Higher than 73% of seats.

People per square mile5,281 77th pct · 19th of 80 in CA

Denser than 77% 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 80
64% Hispanic · 27% college gradsD+21.6Held DDistrict 56
58% Hispanic · 30% college gradsD+22.1Held DDistrict 53
67% Hispanic · 22% college gradsD+16.8Held DDistrict 64
74% Hispanic · 23% college gradsD+21.0Held 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. Blanca Rubio (D)
    2023– · Won 2022 by 21.7, 2024 by 23.6, 2026 by 38.4

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