2018Final results
2018 election for Utah Senate District 4
Utah State Senate · Utah
Jani Iwamoto (D) won with 67.1% of the vote, defeating Alan Monsen (R) by 34.2 points.
Jani IwamotoDemocrat · winner · incumbent
67.1%34,651
Alan MonsenRepublican
32.9%17,000
51,651 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET