2018Final results
2018 election for Washington Legislative District 21
Washington State Senate · Washington
Marko Liias (D) won with 63.2% of the vote, defeating Mario Lionel Lotmore (R) by 26.3 points.
Marko LiiasDemocrat · winner · incumbent
63.2%37,567
Mario Lionel LotmoreRepublican
36.8%21,914
59,481 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