2020Final results
2020 election for Arizona Legislative District 12
Arizona State Senate · Arizona
Warren Petersen (R) won with 61.6% of the vote, defeating Lynsey Robinson (D) by 23.3 points.
Warren PetersenRepublican · winner
61.6%96,149
Lynsey RobinsonDemocrat
38.4%59,852
156,001 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET