CREATE TABLE table_18665 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

who is the the incumbent with dbeingtrict being arkansas 1
SELECT "Incumbent" FROM table_18665 WHERE "District" = 'Arkansas 1'
SELECT "Incumbent" FROM "table_18665" WHERE "District" = 'Arkansas 1'