CREATE TABLE table_74012 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

Name the candidates for john boyle
SELECT "Candidates" FROM table_74012 WHERE "Incumbent" = 'John Boyle'
SELECT "Candidates" FROM "table_74012" WHERE "Incumbent" = 'John Boyle'