CREATE TABLE table_18542 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What is the party for first elected 1948 for william t. granahan
SELECT "Party" FROM table_18542 WHERE "First elected" = '1948' AND "Incumbent" = 'William T. Granahan'
SELECT "Party" FROM "table_18542" WHERE "First elected" = '1948' AND "Incumbent" = 'William T. Granahan'