2018Final results
2018 election for Hawaii Senate District 12
Hawaii State Senate · Hawaii
Sharon Moriwaki (D) won with 70.4% of the vote, defeating Lynn Barry Mariano (R) by 40.8 points.
Sharon MoriwakiDemocrat · winner
70.4%9,507
Lynn Barry MarianoRepublican
29.6%3,999
13,506 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