2024Final results
2024 election for Washington Legislative District 18
Washington State Senate · Washington
Adrian Cortes (D) won with 50.0% of the vote, defeating Brad Benton (R) by 0.2 points.
Adrian CortesDemocrat · winner
50.0%42,053
Brad BentonRepublican
49.8%41,881
The same year, the district voted D+2.4 for president; this race was D+0.2.84,123 votes
Source: Washington Secretary of StateUpdated Sep 30, 2026, 12:29 PM ET
The seat over time
D − R margin in this seat's races around 2024
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)