CREATE TABLE table_18639 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

In how many districts is the incumbent Dave E. Satterfield, Jr.
SELECT COUNT("Result") FROM table_18639 WHERE "Incumbent" = 'Dave E. Satterfield, Jr.'
SELECT COUNT("Result") FROM "table_18639" WHERE "Incumbent" = 'Dave E. Satterfield, Jr.'