Table: election_results_1926_6
Columns: district
incumbent
party
first_elected
result
candidates

Question: What was the last year that incumbent joseph t. deal was first elected?
SQL: SELECT MAX("first_elected") FROM election_results_1926_6 WHERE "incumbent" = 'Joseph T. Deal'

Question: What year was someone first elected?
SQL: SELECT MIN("first_elected") FROM election_results_1926_6