Upset Brief · CA-27 · Jason Gibbs (R) vs. George Whitesides (D), incumbent

A long shot on the math: it takes a 7.1-point national wave.

13%
odds today
16%
odds with the plan
14,869
net votes to find
37
days left; voting starts October 5
Where
  1. 01
    Santa Clarita
    Starting line Gibbs +1. 1.8% split their ticket.
    +830
  2. 02
    Los Angeles
    Starting line Whitesides +25.
    +156
  3. 03
    Lancaster
    Starting line Whitesides +8. 0.6% split their ticket.
    +141
  4. 04
    Unincorporated Los Angeles County
    Starting line Gibbs +4. 1.2% split their ticket.
    +131
  5. 05
    Palmdale
    Starting line Whitesides +13.
    +121

The top 5 cities and unincorporated areas carry 100% of the plan.

How
  • P
    Persuade
    1,009 voters who split their ticket in recent elections and lean Whitesides today.
    +1,009
  • M
    Mobilize
    There are almost no cities and unincorporated areas Gibbs's side carries, so turnout alone cannot help here.
    +0
  • C
    Consolidate
    Voters who went third party in recent races, in the cities and unincorporated areas that lean Gibbs's way.
    +371

Plus a national shift of 7.1 points of margin (13,489 votes) that no campaign controls.

What has to be true
  1. Gibbs wins 50 percent of the ticket splitters now leaning Whitesides.
  2. The national environment moves about 7.1 points toward Gibbs's side between now and November 3.
  3. No 2026 public poll exists for this race, so the starting line is a weighted blend of official recent results; the first real poll will move it.
The numbers behind it
  • 01
    Crossover regression
    283 precincts, R² 0.975, 94 crossover precincts identified
  • 02
    Monte Carlo
    20,000 seeded simulated elections with a 7-point baseline error. 90% range of the final margin with the plan: -35,296 to 8,789 votes.
  • 03
    Money, FEC candidate totals through June 30
    Gibbs $201,877 cash on hand; Whitesides $2,554,917.
  • 04
    Call program for this list
    2,123 households, 6,370 dials, about 334 live conversations: an estimated $1,317 at published rates.
For the campaign

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The full plan, the map and the live odds simulator ›All California races ranked ›

Independent analysis by The Political Group from official California Secretary of State precinct returns (2022 and 2024), FEC filings and published polls, as of September 26, 2026. Not affiliated with any candidate or party.