CREATE TABLE table_28583 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "Elected" FLOAT, "Status" CLOB, "Result" CLOB)

What date was the district incumbent Saxby Chambliss elected?
SELECT MAX("Elected") FROM table_28583 WHERE "Incumbent" = 'Saxby Chambliss'
SELECT MAX("Elected") FROM "table_28583" WHERE "Incumbent" = 'Saxby Chambliss'