CREATE TABLE table_18547 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

How many times was w. arthur winstead first elected?
SELECT COUNT("First elected") FROM table_18547 WHERE "Incumbent" = 'W. Arthur Winstead'
SELECT COUNT("First elected") FROM "table_18547" WHERE "Incumbent" = 'W. Arthur Winstead'