Races · house · 2024 · California

house · open seat

Chris Anstead vs Michael Koslow

← California house California house →

Safe DD +18.4 forecast· 0 polls · 0 markets

Model's final pre-election call · win probabilitypoliagg-v34 · final pre-election call
99% Anstead (D)
1% Koslow (R)
Win probability
Chris Anstead99% (D)
Michael Koslow1% (R)
Modelpoliagg-v34 · final pre-election call
Chance of winning across many simulations of the race — not projected vote share.
R+15R+5TIEDD+5D+15
Predicted margin
Point estimateD +18.4
80% CID+6.4 → D+30.4
The model’s central margin (D-positive) with its 80% interval — the shaded band on the scale.
Model's predicted final margin D +18.4 · 80% CI D+6.4 → D+30.4
Actual result D+12.1 · backtest (race already called)

Momentum

—

insufficient data

Tipping-point P

0.0%

Decisive for chamber control

Market · D-side

—

Cross-platform consensus

News articles · 30d

—

no recent coverage

Where this race stands

Verified

Likely D · model 99% D

No recent polls or markets for this race. PVI baseline (D+8) suggests Likely D.

The poliagg-v34 ensemble forecasts D+18.4 with an 80% CI ranging from D+6.4 (10th pctile) to D+30.4 (90th pctile), giving D a 99% chance of winning.

CITATIONS · likely-d

Forecast · poliagg-v34

Predicted final margin

D +18.4

80% CI: D +6.4 → D +30.4 · win prob 99%

R+45R+23TIEDD+23D+45

Quality · inputs

Data quality · medium

Polls used	0
Days to election	passed
Actual result	D+12.1
Residual σ	6.00pt
Generated	7/1/2026

Endorsements · 0 total

Source · Wikipedia · 2 candidates with no endorsements yet

DChris Anstead0 endorsers

no endorsers yet

No endorsements found yet. Endorsements come from the candidate's Wikipedia article (when one exists) and update with the daily scrape.

RMichael Koslow0 endorsers

no endorsers yet

No endorsements found yet. Endorsements come from the candidate's Wikipedia article (when one exists) and update with the daily scrape.

Money raised · own committees

FEC Schedule E (independent expenditures) + candidate-committee totals · last filing 2024-10-18

Michael KoslowH4CA26162 ↗

Receipts

$100.8K

Disburse

$89.4K

Cash on hand

$11.3K

Debts

$65.9K

Top industries

Health professionals$1.0K

Top contributors

OBERHEIDEN P.C.$3.3K

BERNAL AND ROBBINS$2.0K

GOLDEN STATE MAGNETIC$1.5K

COMPASS$1.4K

WALT CONSTRUCTION CORPORATION$1.2K

Chris AnsteadOWN COMMITTEE

Receipts

$42.4K

Disburse

$42.4K

Cash on hand

Debts

$5.4K

Top industries

Govt employees$500

Top contributors

CRONIES SPORTS GRILL$3.3K

STATE OF FLORIDA$500

CELLTRION$500

LVUSD$203.88

Outside spending · independent expenditures

FEC Schedule E (independent expenditures) + candidate-committee totals · 24/48-hr IE reports

IE total

$47.0K

D side

$46.8K · 100%

R side

$157.29 · 0%

Top spender

REFORM LEADERS PAC

For / against split

For Brownley $46.8K

For Koslow $157.29

Spender	Side	Amount	Share	Target
REFORM LEADERS PAC	R	$157.29	0%	for Michael Koslow

Editorial ratings · 3 raters

Cook · Sabato · Inside Elections · 538 · DDHQ et al.

Safe D3

CNalysis

Safe D

Nov 15

The Cook Political Report

Safe D

Feb 1

Sabato's Crystal Ball

Safe D

Feb 22

Demographic crosstabs

age · education · race · gender

No demographic crosstabs published for this race yet. Most pollsters release only topline numbers; subgroup breakdowns (age, education, race, gender) appear here when a pollster publishes them.

Rating timeline

May 15, 2026Safe Dmodel

Verification trail

Polls verified0 / 0deterministic

Polls flagged—none

Markets ingested0 platformsnone listed

FEC filingssyncedcommittee + IE · 2024-10-18

Endorsements—nothing to sync

News coverage< 5 articlesGoogle News

Method · bounds + percentage totals + date-order checks