CREATE TABLE table_3604 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

First elected in 1807 1817 in what district?
SELECT "District" FROM table_3604 WHERE "First elected" = '1807 1817'
SELECT "District" FROM "table_3604" WHERE "First elected" = '1807 1817'