Question: What year was incumbent William F. Stevenson first elected?
SQL: SELECT "First elected" FROM "1-1342451-38" WHERE "Incumbent" = 'William F. Stevenson';

Question: What is the last year on this list someone was first elected?
SQL: SELECT MAX("First elected") FROM "1-1342451-38";

Question: What candidate was featured in the election for incumbent Samuel J. Nicholls' seat?
SQL: SELECT "Candidates" FROM "1-1342451-38" WHERE "Incumbent" = 'Samuel J. Nicholls';

Question: What is the last year incumbent Frederick H. Dominick was first elected?
SQL: SELECT MAX("First elected") FROM "1-1342451-38" WHERE "Incumbent" = 'Frederick H. Dominick';