State Senate · LD13
Chandler
Open: J.D. Mesnard is termed out. Willoughby currently serves in the House. The Independent Redistricting Commission's measure puts the Republican advantage at about 1.5 points. Source: Triadvocates Navigator (Sept. 16, 2026) and local reporting.
Candidates
Julie Willoughby on X (opens in a new tab)
Republican
Polls
Not enough polling
No verified polls from the last 45 days. We show an average only with at least 2. Why?
- Rating
- Pending source
- 2024 State Senate result
- R+6.3
- Registration
- Pending source
Polls are entered by hand from each pollster's release and checked against the source before they count. How the average works
Forecast model
FutureBallot's model, not ours: a chance of winning from polls, past results and campaign money. We never call races.
- Willoughby56%
- O'Brien44%
Source: FutureBallot · forecast of Oct 30, 11:31 PM MST
Prediction markets
No prediction market is tracking this race.
Campaign money
Willoughby has outraised O'Brien, $424K to $263K.
Willoughby has outspent O'Brien, $320K to $179K.
- Kristie O'Brien (D)See The Money #101887
- Raised
- $263K
- Spent
- $179K
- Cash
- $73K
- Julie Willoughby (R)See The Money #101903
- Raised
- $424K
- Spent
- $320K
- Cash
- $104K
Outside spending
Independent expenditures by groups not controlled by any campaign, reported as for or against each candidate.
| Candidate | For | Against |
|---|---|---|
| O'Brien | $233K | $421K |
| Willoughby | $502K | $670K |
Reports filed with the Arizona Secretary of State for 2025–26. Retrieved Oct 31, 6:09 AM MST.
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