CREATE TABLE table_18585 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

How many parties does incumbent carl vinson represent?
SELECT COUNT("Party") FROM table_18585 WHERE "Incumbent" = 'Carl Vinson'
SELECT COUNT("Party") FROM "table_18585" WHERE "Incumbent" = 'Carl Vinson'