CREATE TABLE table_25101 ("District" TEXT, "Vacator" TEXT, "Reason for change" TEXT, "Successor" TEXT, "Date successor seated" TEXT)

Name the district for rep. warren r. davis died during previous congress
SELECT "District" FROM table_25101 WHERE "Reason for change" = 'Rep. Warren R. Davis died during previous congress'
SELECT "District" FROM "table_25101" WHERE "Reason for change" = 'Rep. Warren R. Davis died during previous congress'