CREATE TABLE table_18466 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What is the number of party in the arkansas 1 district
SELECT COUNT("Party") FROM table_18466 WHERE "District" = 'Arkansas 1'
SELECT COUNT("Party") FROM "table_18466" WHERE "District" = 'Arkansas 1'