CREATE TABLE table_19246 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who was everyone first elected when incumbent was John J. Hemphill?
SELECT "First elected" FROM table_19246 WHERE "Incumbent" = 'John J. Hemphill'
SELECT "First elected" FROM "table_19246" WHERE "Incumbent" = 'John J. Hemphill'