Christine Drazan holds the trader consensus lead at 47.5% implied probability for the May 19 Republican primary amid a crowded field of 15 candidates, bolstered by her name recognition as the 2022 nominee who narrowed the gap to under 4% against the Democratic incumbent, robust fundraising, and established campaign infrastructure from ongoing political activity. State Rep. Ed Diehl trails at 32.5%, lifted by a March 3–8 self-selected online survey of 921 Republicans showing him at 66.4%—though traders discount its methodology and campaign ties—plus his role leading the No Tax Oregon effort blocking parts of a 2025 transportation law. Chris Dudley sits at 15%, energized by a $1 million donation from Nike co-founder Phil Knight on March 12 and recent media appearances alongside Drazan critiquing education and infrastructure costs. With the legislative session concluding, upcoming debates and endorsements could shift the closely contested dynamics ahead of early voting.