CREATE TABLE table_62423 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Results" CLOB)

Who is the republican Incumbent for Pennsylvania 9?
SELECT "Incumbent" FROM table_62423 WHERE "Party" = 'republican' AND "District" = 'pennsylvania 9'
SELECT "Incumbent" FROM "table_62423" WHERE "District" = 'pennsylvania 9' AND "Party" = 'republican'