CREATE TABLE table_18372 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who was the incumbent in 1940?
SELECT "Incumbent" FROM table_18372 WHERE "First elected" = '1940'
SELECT "Incumbent" FROM "table_18372" WHERE "First elected" = '1940'