CREATE TABLE table_6557 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT)

Which Result has a Party of republican, and a First elected smaller than 1856?
SELECT "Result" FROM table_6557 WHERE "Party" = 'republican' AND "First elected" < '1856'
SELECT "Result" FROM "table_6557" WHERE "First elected" < '1856' AND "Party" = 'republican'