CREATE TABLE table_72397 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Name the total number of incumbent for first elected of 1944
SELECT COUNT("Incumbent") FROM table_72397 WHERE "First elected" = '1944'
SELECT COUNT("Incumbent") FROM "table_72397" WHERE "First elected" = '1944'