CREATE TABLE table_18533 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Who is the candidate wehre district is louisiana 1?
SELECT "Candidates" FROM table_18533 WHERE "District" = 'Louisiana 1'
SELECT "Candidates" FROM "table_18533" WHERE "District" = 'Louisiana 1'