David Roth leads trader consensus at 74% implied probability in the Idaho Democratic U.S. Senate primary on May 19, driven by his experience as the party's 2022 nominee, established campaign infrastructure via rothforidaho.org, and early fundraising edge of over $5,000 reported by late February, outpacing challengers. Nickolas Bonds and Brad Moore trail at 12% and 10%, respectively, reflecting their lower profiles—Bonds as an estate executive with a novelty "007" persona and Moore lacking comparable visibility or resources amid Idaho's closed primary system. With no public polls or major endorsements shifting dynamics in the past 30 days since candidate filings closed February 27, traders anticipate Roth's path to the nomination against Republican incumbent Jim Risch in the deep-red general election, though low Democratic turnout remains a wildcard.