The closely contested Georgia Republican primary for the U.S. Senate seat, scheduled for May 19, has left traders assigning Mike Collins the narrowest of leads over Derek Dooley amid a field where no candidate has secured a majority in recent polling. Governor Brian Kemp’s endorsement and recent television advertising have lifted Dooley into a competitive second place, narrowing the gap with Collins, who maintains advantages in fundraising and name recognition among House colleagues. Earl “Buddy” Carter trails well behind as voters weigh establishment ties against outsider appeals, with a June 16 runoff likely if the top vote-getter falls short of 50 percent. High undecided shares and the absence of a presidential endorsement have kept the outcome fluid heading into election day.