CREATE TABLE table_18186 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

what's the result for first elected in 1948 , 1964
SELECT "Result" FROM table_18186 WHERE "First elected" = '1948 , 1964'
SELECT "Result" FROM "table_18186" WHERE "First elected" = '1948 , 1964'