CREATE TABLE table_5538 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB)

wWhich district has a retired republican hold with an incumbent of rufus p. spalding?
SELECT "District" FROM table_5538 WHERE "Result" = 'retired republican hold' AND "Incumbent" = 'rufus p. spalding'
SELECT "District" FROM "table_5538" WHERE "Incumbent" = 'rufus p. spalding' AND "Result" = 'retired republican hold'