CREATE TABLE table_72398 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

How many incumbents come from alvin bush's district?
SELECT COUNT("Candidates") FROM table_72398 WHERE "Incumbent" = 'Alvin Bush'
SELECT COUNT("Candidates") FROM "table_72398" WHERE "Incumbent" = 'Alvin Bush'