Table: election_results_11
Columns: district
incumbent
party
first_elected
result
candidates

Question: When was incumbent Leo E. Allen first elected?
SQL: SELECT MIN("first_elected") FROM election_results_11 WHERE "incumbent" = 'Leo E. Allen'

Question: Which district has a Republican elected?
SQL: SELECT "district" FROM election_results_11 WHERE "party" = 'Republican'