Akashic EdgeAKASHIC EDGE
ElectionsCandidates
HistorianCartographer2026 ForecastArticlesAPIPricing

Latest Articles

    View all articles →

    Browse by Category

      Data Tools

      • Elections
      • Candidates
      • The Historian
      • The Cartographer
      • American Nations
      • States & Counties
      • Congressional Districts

      About

      Akashic HQ provides deep political data analysis covering 165 years of U.S. elections.

      • Data Sources & Methodology
      • Pricing
      • API Documentation
      • Contact

      © 2026 Akashic HQ. All rights reserved.

      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2008/US House/California/CA-20
      2008·US House·California·District profile →

      California District 20 US House

      Winner
      DEM
      Jim Costa
      74.3%93,023 votes
      Runner-up
      REP
      Jim Lopez
      25.7%32,118 votes
      Margin
      D+48.7
      125,141 total votes
      2 candidates125,141 total votes
      CandidatePartyVotes ▼%Vote Share
      Jim CostaDEM✓
      DEM93,02374.3%
      Jim LopezREP
      REP32,11825.7%

      Presidential Vote by District

      5 elections · 2008–2024 · 118th Congress boundaries
      Latest (2024)R+30.3
      Shift vs 2020↓ R+5.5
      R+20EvenD+2020082012201620202024
      YearDem %Rep %MarginTurnout
      202433.7%64.0%R+30.3328,446
      202036.4%61.3%R+24.9349,862
      201631.8%62.6%R+30.8270,759
      201233.0%67.0%R+33.9246,703
      200834.5%64.9%R+30.4254,364

      Seat History

      US House in California

      2024
      Vince FongREP
      R+100.0
      2022
      Kevin McCarthyREP
      R+34.5
      Redistricted
      2020
      Jimmy PanettaDEM
      D+53.5
      2018
      Jimmy PanettaDEM
      D+81.4
      2016
      Jimmy PanettaDEM
      D+41.5
      2014
      Sam FarrDEM
      D+75.2
      2012
      Sam FarrDEM
      D+48.1
      Redistricted
      2010
      Jim CostaDEM
      D+3.4
      2006
      Jim CostaDEM
      D+100.0
      2004
      Jim CostaDEM
      D+6.8
      2002
      Calvin M DooleyDEM
      D+29.4
      Redistricted
      2000
      Calvin M DooleyDEM
      D+6.8
      1998
      Calvin M DooleyDEM
      D+21.5
      1996
      Calvin M DooleyDEM
      D+17.4
      View all US House history for California →

      Candidates

      Jim CostaDEM
      Record21W-0L
      Avg MarginD+38.3
      Career1978-2024
      US House / State Senate / State House
      Full profile →
      Jim LopezREP
      Record0W-1L
      Avg Margin---
      Career2008-2008
      US House
      Full profile →

      Also in California, 2008

      President1 contest →
      ← All 2008 US House races2008 overviewCalifornia profileAll elections