CREATE TABLE table_18687 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

In what district was the representative first elected in 1916?
SELECT "District" FROM table_18687 WHERE "First elected" = '1916'
SELECT "District" FROM "table_18687" WHERE "First elected" = '1916'