Mike Collins holds the lead in Georgia's Republican Senate primary as the only candidate with consistent statewide polling advantages and stronger recent fundraising totals, positioning him as the front-runner among voters seeking an established congressional record ahead of the May 19 contest. Derek Dooley has narrowed the gap through Governor Brian Kemp's endorsement and targeted advertising, which recent surveys show boosting his support to the low twenties while leaving roughly 30 percent of likely primary voters undecided. Buddy Carter trails after negative exchanges in late-April debates and lower ad spending. If no candidate reaches a majority, a June 16 runoff would follow, sustaining uncertainty reflected in current trader pricing.