Cortes flipped the 18th District from Republican to Democrat for the first time in a generation, succeeding retiring Republican Sen. Ann Rivers. His 173-vote victory (50.0%-49.8%) was the only 2024 Washington race requiring a recount. The WA GOP filed a lawsuit alleging voter residency irregularities, which was dismissed by a judge in June 2025.
The 18th District race was one of the most expensive in Washington state history, with nearly $2 million spent by candidates and outside groups. His opponent Brad Benton is the son of former state Sen. Don Benton. Cortes gave Democrats a 30-19 advantage in the Senate. Declared for 2028 re-election. Was the only Hispanic mayor in Clark County and first mayor of color in Battle Ground's history.
Key dates to watch: General Election on November 7, 2028.
