CREATE TABLE table_18566 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What candidate is associated with the Georgia 4 district?
SELECT "Candidates" FROM table_18566 WHERE "District" = 'Georgia 4'
SELECT "Candidates" FROM "table_18566" WHERE "District" = 'Georgia 4'