U.S. Senator Mazie Hirono won her Democratic primary election in Hawaii, setting her up for a likely victory in the general election as she seeks a third term. Hirono, who first entered the Senate in 2013, faced Ron Curtis and Clyde Lewman in the primary, winning decisively against Curtis, who previously lost to her in 2018. The election took place in a vote-by-mail format, with ballots needing to be received by 7 p.m. on Election Day. In other races, U.S. Rep. Ed Case won his primary for Hawaii's 1st Congressional District, while Jill Tokuda ran unopposed in the 2nd Congressional District. The Republican nomination for Senate saw former state Rep. Bob McDermott emerge as the candidate to challenge Hirono in November. Hawaii's congressional delegation remains fully Democratic, reinforcing the party's stronghold in the state.