CREATE TABLE table_72371 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "Elected" FLOAT, "Status" TEXT, "Opponent" TEXT)

What districts does incumbent Curt Weldon hold?
SELECT "District" FROM table_72371 WHERE "Incumbent" = 'Curt Weldon'
SELECT "District" FROM "table_72371" WHERE "Incumbent" = 'Curt Weldon'