CREATE TABLE table_18682 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

How many people were elected in 1929
SELECT COUNT("Candidates") FROM table_18682 WHERE "First elected" = '1929'
SELECT COUNT("Candidates") FROM "table_18682" WHERE "First elected" = '1929'