Charles Booker holds a commanding lead in the Kentucky Democratic primary for the open U.S. Senate seat, reflecting his prior statewide campaigns in 2020 and 2022, early fundraising strength, and consistent positioning atop limited public polling released in April. With the May 19 primary just days away, traders appear to view his grassroots donor base and name recognition among Democratic voters as decisive advantages over challengers including Amy McGrath, Pamela Stevenson, and Dale Romans. The primary winner will face a Republican nominee in November for the seat previously held by retiring Sen. Mitch McConnell. A late surge by another candidate or unusually low turnout among Booker supporters could still shift the outcome before polls close.