Georgia Gov. Brian Kemp is done being underestimated. Having vanquished both a Donald Trump-backed Republican challenger and Democratic star Stacey Abrams to win reelection, Kemp is looking to expand his influence in his second term, free from the caricature of the gun-toting, pickup-driving, migrant-catching country boy that emerged during his first campaign for governor. A new vision of Kemp steering his party toward a non-Trumpian conservatism made its debut in his November victory speech after it became clear that he had defeated Abrams by a much larger margin in their rematch than he had in their tight 2018 matchup. “This...