Alex Zdan holds the leading position in the New Jersey Republican U.S. Senate primary through extensive county-level party endorsements across the state and his profile as a former News 12 New Jersey political reporter and commentator. The June 2 contest to select the nominee against incumbent Democrat Cory Booker features limited statewide polling and remains a low-visibility race dominated by organizational support rather than broad advertising. Richard Tabor, a New Jersey state trooper, maintains secondary standing after securing endorsements in select counties, though he trails in overall party backing. The remaining candidates, including Justin Murphy, show minimal organizational alignment and correspondingly low positioning ahead of voting. No major late developments have altered the endorsement-driven dynamics in recent days.