Question: What district was John Porter elected in?
SQL: SELECT "District" FROM "1-1341453-15" WHERE "Incumbent" = 'John Porter';

Question: What was the result in Illinois 7?
SQL: SELECT "Results" FROM "1-1341453-15" WHERE "District" = 'Illinois 7';

Question: Who were the candidates in the district where Jerry Costello won?
SQL: SELECT "Candidates" FROM "1-1341453-15" WHERE "Incumbent" = 'Jerry Costello';