Incumbent Ed Case maintains a slim edge in trader consensus for the HI-01 Democratic primary ahead of the August 8 vote, but the race remains tightly contested due to a crowded field and significant undecided voters. State Sen. Jarrett Keohokalole has emerged as the leading challenger, backed by groups such as Indivisible Hawaii and drawing support in recent polling that shows the contest narrowing when fewer opponents remain. Other declared candidates including Jennifer Booker, Ben Fatula, and Nicholas Kiswanto register minimal traction, consistent with limited name recognition or fundraising. National attention on Case as a potential primary target has amplified scrutiny of his record, while open primary rules and Hawaii's moderate Democratic electorate sustain uncertainty over final turnout and vote consolidation.