Jermaine Johnson's position as the frontrunner in the South Carolina Democratic primary for governor reflects his status as a sitting state representative, which provides established name recognition and legislative experience among party voters ahead of the June 9 vote. Traders assign him a 65 percent implied probability, ahead of Billy Webster at 19.5 percent, Mullins McLeod at 17.5 percent, and Justin A. Bennett at 1.4 percent. Recent campaign announcements and a planned debate series have highlighted differences in backgrounds, with Webster's prior White House service and McLeod's legal work drawing support but not yet closing the gap. The primary's outcome will hinge on turnout in key Democratic areas and any late endorsements or polling shifts in the remaining weeks.