CREATE TABLE table_18280 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Who are shown as candidates when George Darden is the incumbent?
SELECT "Candidates" FROM table_18280 WHERE "Incumbent" = 'George Darden'
SELECT "Candidates" FROM "table_18280" WHERE "Incumbent" = 'George Darden'