CREATE TABLE table_18544 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

How many districts have an incumbent first elected in 1944?
SELECT COUNT("District") FROM table_18544 WHERE "First elected" = '1944'
SELECT COUNT("District") FROM "table_18544" WHERE "First elected" = '1944'