CREATE TABLE table_72414 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What party did the incumbent of the Arkansas 6 district belong to?
SELECT "Party" FROM table_72414 WHERE "District" = 'Arkansas 6'
SELECT "Party" FROM "table_72414" WHERE "District" = 'Arkansas 6'