State Sen. David Brock Smith holds the leading position in Oregon’s Republican U.S. Senate primary, driven by late-April and early-May endorsements from the Taxpayers Association of Oregon and conservative officials highlighting his anti-tax record and legislative work on wildfires and Measure 110 reform. Superior fundraising, with roughly $24,000 cash on hand compared to Jo Rae Perkins’ roughly $1,000 as of late March, reinforces trader views of his stronger infrastructure against incumbent Sen. Jeff Merkley. Perkins maintains the second slot through name recognition from her 2020 and 2022 statewide nominations, though prior general-election defeats limit momentum. With ballots already mailed for the May 19 contest and no public polling available, the fragmented field of eight other candidates trails sharply, reflecting limited visibility and resources ahead of primary-day turnout.