CREATE TABLE table_18127 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

How many parties is the incumbent Bob Brady a member of?
SELECT COUNT("Party") FROM table_18127 WHERE "Incumbent" = 'Bob Brady'
SELECT COUNT("Party") FROM "table_18127" WHERE "Incumbent" = 'Bob Brady'