CREATE TABLE table_18679 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

How many candidates ran in the election in the Arkansas 4 district?
SELECT COUNT("Candidates") FROM table_18679 WHERE "District" = 'Arkansas 4'
SELECT COUNT("Candidates") FROM "table_18679" WHERE "District" = 'Arkansas 4'