CREATE TABLE table_18297 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What's the winning party in the Pennsylvania 6 district?
SELECT "Party" FROM table_18297 WHERE "District" = 'Pennsylvania 6'
SELECT "Party" FROM "table_18297" WHERE "District" = 'Pennsylvania 6'