2016Final results
2016 election for Idaho Legislative District 4
Idaho State Senate · Idaho
Mary Souza (R) won with 62.9% of the vote, defeating Kristi Milan (D) by 25.9 points.
Mary SouzaRepublican · winner · incumbent
62.9%13,233
Kristi MilanDemocrat
37.1%7,793
21,026 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET