Upset Brief · CA-15 · Charles Hoelter (R) vs. Kevin Mullin (D), incumbent

A long shot on the math: it takes a 47.6-point national wave.

0%
odds today
0%
odds with the plan
110,536
net votes to find
37
days left; voting starts October 5
Where
  1. 01
    San Francisco
    Starting line Mullin +47. 2.7% split their ticket.
    +450
  2. 02
    San Mateo
    Starting line Mullin +51. 1.7% split their ticket.
    +339
  3. 03
    San Carlos
    Starting line Mullin +55. 3.0% split their ticket.
    +234
  4. 04
    Redwood City
    Starting line Mullin +55. 1.5% split their ticket.
    +220
  5. 05
    Hillsborough
    Starting line Mullin +25. 6.9% split their ticket.
    +187
  6. 06
    Daly City
    Starting line Mullin +47. 1.3% split their ticket.
    +184

The top 12 cities and unincorporated areas carry 94% of the plan.

How
  • P
    Persuade
    2,164 voters who split their ticket in recent elections and lean Mullin today.
    +2,164
  • M
    Mobilize
    There are almost no cities and unincorporated areas Hoelter'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 Hoelter's way.
    +285

Plus a national shift of 47.6 points of margin (108,087 votes) that no campaign controls.

What has to be true
  1. Hoelter wins 50 percent of the ticket splitters now leaning Mullin.
  2. The national environment moves about 47.6 points toward Hoelter'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
    339 precincts, R² 0.764, 68 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: -134,586 to -81,732 votes.
  • 03
    Money, FEC candidate totals through June 30
    Hoelter no FEC totals reported; Mullin $219,735.
  • 04
    Call program for this list
    3,549 households, 10,646 dials, about 558 live conversations: an estimated $2,025 at published rates.
For the campaign

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For donors, PACs and committees

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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.