ATLANTA — Move over, Ohio. Make room, Florida and Pennsylvania. Georgia wants in on the swing-state action. The state’s gubernatorial contest comes into greater focus Tuesday after Republicans choose between Brian Kemp, who is endorsed by President Donald Trump, and Casey Cagle, who is backed by Gov. Nathan Deal. The victor in their party runoff will take on Democrat Stacey Abrams in her bid to become the first African-American woman elected governor in the U.S.