CREATE TABLE table_18490 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Name the party for the pennsylvania 25
SELECT "Party" FROM table_18490 WHERE "District" = 'Pennsylvania 25'
SELECT "Party" FROM "table_18490" WHERE "District" = 'Pennsylvania 25'