CREATE TABLE table_18496 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

how many first elected with incumbent being charles edward bennett
SELECT COUNT("First elected") FROM table_18496 WHERE "Incumbent" = 'Charles Edward Bennett'
SELECT COUNT("First elected") FROM "table_18496" WHERE "Incumbent" = 'Charles Edward Bennett'