CREATE TABLE table_39224 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB)

In the Ohio 4 district, that is the first elected date that has a result of re-elected?
SELECT SUM("First elected") FROM table_39224 WHERE "Result" = 're-elected' AND "District" = 'ohio 4'
SELECT SUM("First elected") FROM "table_39224" WHERE "District" = 'ohio 4' AND "Result" = 're-elected'