1990Final results
1990 election for Arizona Legislative District 12
Arizona State Senate · Arizona
Ann Day (R) won with 53.8% of the vote, defeating Katherine Jacobsen (D) by 7.7 points.
Ann DayRepublican · winner
53.8%23,680
Katherine JacobsenDemocrat
46.2%20,310
44,005 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET