99chambers

U.S. House seat · lines in effect since 2026

California's 27th District

A district of about 728,000 people, 48% Hispanic, 29% of adults with a bachelor's degree. It votes D+12.4 relative to the nation for president.

George Whitesides (D) · since Jan 3, 2025Next election Nov 7, 2028The 2026 race →
CA-27

Source: 2026 results: California Secretary of State; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House 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+12.4154th most
Democratic
Most DemocraticMost Republican218th seat · the majority line12113734431516173036442914819101832282425251465041263843194273339149CA-273547321625451348224023520

Labels below the bar mark 51 other seats in California.

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.

2026
U.S. HouseD+27.2

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 435 seats. Small marks are other seats in California. The black marker is CA-27.

Adults with a bachelor's degree29% 32nd pct · 33rd of 52 in CA

Lower than 68% of seats.

White adults without a degree21% 19th pct · 24th of 52 in CA

Lower than 81% of seats.

Hispanic residents48% 91st pct · 19th of 52 in CA

Higher than 91% of seats.

Black residents9% 58th pct · 6th of 52 in CA

Higher than 58% of seats.

Asian residents9% 82nd pct · 35th of 52 in CA

Higher than 82% of seats.

People per square mile895 66th pct · 35th of 52 in CA

Denser than 66% 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. 1 of the 4 flipped this year.

NV-1
37% Hispanic · 26% college gradsD+3.7Held DCA-48
42% Hispanic · 32% college gradsD+4.1Flipped DCA-26
43% Hispanic · 38% college gradsD+17.5Held DCA-52
60% Hispanic · 26% college gradsD+22.0Held 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 2026.

  1. George Whitesides (D)
    2027– · Won 2026 by 27.2

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