99chambers

Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Washington · Washington Legislative District 4 · Updated Oct 16, 2026

Rob Tupper

Democratic2 seatsTop two

2026 race · Washington Legislative District 4

3% chance of winning · race rated Solid R

3%97%

6% chance of winning · race rated Likely R

6%94%
● Rob Tupper● Rob ChaseINCAlso: Hillary Pham (R), Trent Maier (R)
Full race forecast

Background

Record
No elected office on file.

Links: Candidate list (source)

Opponents in 2026