CREATE TABLE table_18556 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who is the candidate for the district Arkansas 2?
SELECT "Candidates" FROM table_18556 WHERE "District" = 'Arkansas 2'
SELECT "Candidates" FROM "table_18556" WHERE "District" = 'Arkansas 2'