CREATE TABLE table_18218 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "Elected" FLOAT, "Status" CLOB, "Opponent" CLOB)

In how many districts was the democratic incumbent elected in 1974?
SELECT COUNT("District") FROM table_18218 WHERE "Party" = 'Democratic' AND "Elected" = '1974'
SELECT COUNT("District") FROM "table_18218" WHERE "Elected" = '1974' AND "Party" = 'Democratic'