CREATE TABLE table_18385 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

How many districts does Donald D. Clancy represent?
SELECT COUNT("District") FROM table_18385 WHERE "Incumbent" = 'Donald D. Clancy'
SELECT COUNT("District") FROM "table_18385" WHERE "Incumbent" = 'Donald D. Clancy'