Arizona › Maricopa County › Arizona Senate District 13
2 candidates are tracked for Arizona Senate District 13 on the November 3, 2026 ballot: Julie Willoughby and Kristie O'Brien. Candidate information follows official Maricopa County election filings; verify with the official election office linked below.
Julie Willoughby (Republican), Kristie O'Brien (Democratic) are on the November 3 ballot for Arizona Senate District 13. Not on the November ballot: J.D. Mesnard, the sitting member per the roster. Nominees were chosen at the July 28 primary or by petition/nomination for minor parties and independents. The field is the Secretary of State's 2026 General Election (Election 69) certified candidate list, as read September 10, 2026. This seat is elected by district; only the district covering your address appears on your ballot.
Julie Willoughby is the Republican candidate for Arizona Senate District 13 on the November 3, 2026 ballot, per the Secretary of State's 2026 General Election certified candidate list. Willoughby is an ER trauma nurse and small business owner who currently represents Legislative District 13 in the Arizona House, per campaign site.
2026 priorities (per the campaign site)
- Addressing rising costs for families
- Education and parental rights
- Timely and affordable healthcare
Source: candidate campaign site, roster verified 2026-09-01.
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Kristie O'Brien is the Democratic candidate for Arizona Senate District 13 on the November 3, 2026 ballot, per the Secretary of State's 2026 General Election certified candidate list. O'Brien is an attorney turned mediator and a Chandler native, per campaign site.
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