Upset Brief · CA-45 · Chuong V. Vo (R) vs. Derek Tran (D), incumbent

Vo gets within 2,264 votes on campaign work alone. A 1.1-point national shift finishes it.

37%
odds today
44%
odds with the plan
4,669
net votes to find
37
days left; voting starts October 5
Where
  1. 01
    Garden Grove
    Starting line Vo +2. 1.7% split their ticket.
    +429
  2. 02
    Westminster
    Starting line Vo +9. 2.7% split their ticket.
    +398
  3. 03
    Fullerton
    Starting line Tran +4. 3.3% split their ticket.
    +366
  4. 04
    Cypress
    Starting line Vo +1. 2.3% split their ticket.
    +242
  5. 05
    Fountain Valley
    Starting line Vo +8. 1.7% split their ticket.
    +241
  6. 06
    Cerritos
    Starting line Tran +16. 2.1% split their ticket.
    +212

The top 12 cities and unincorporated areas carry 96% of the plan.

How
  • P
    Persuade
    2,002 voters who split their ticket in recent elections and lean Tran today.
    +2,002
  • M
    Mobilize
    At least 60 people who voted in 2024 but not in 2022, in cities and unincorporated areas where Vo's side wins at least 55 percent.
    +5
  • C
    Consolidate
    Voters who went third party in recent races, in the cities and unincorporated areas that lean Vo's way.
    +398

Plus a national shift of 1.1 points of margin (2,264 votes) that no campaign controls.

What has to be true
  1. Vo wins 50 percent of the ticket splitters now leaning Tran.
  2. The national environment moves about 1.1 points toward Vo'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
    401 precincts, R² 0.893, 79 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: -25,592 to 21,102 votes.
  • 03
    Money, FEC candidate totals through June 30
    Vo $74,876 cash on hand; Tran $3,257,398.
  • 04
    Call program for this list
    3,589 households, 10,767 dials, about 564 live conversations: an estimated $2,048 at published rates.
For the campaign

Run this list with HyperPhonebank.

Professional live callers on exactly these voters: persuasion, voter ID and ballot chase, with a live dashboard of every conversation. An estimated $2,048 for the full list. Days to launch.

For donors, PACs and committees

Fund the contact, see every call.

A program on this list with a dashboard you can watch daily: conversations, voter IDs and ballots chased, precinct by precinct.

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.