Table: election_results_1984_6
Columns: district
incumbent
party
first_elected
result
candidates

Question: What district is incumbent jack hightower from?
SQL: SELECT "district" FROM election_results_1984_6 WHERE "incumbent" = 'Jack Hightower'

Question: What year were the election results tom loeffler (r) 80.6% joe sullivan (d) 19.4%?
SQL: SELECT MIN("first_elected") FROM election_results_1984_6 WHERE "candidates" = 'Tom Loeffler (R) 80.6% Joe Sullivan (D) 19.4%'

Question: What incumbent won the district of texas 22?
SQL: SELECT "incumbent" FROM election_results_1984_6 WHERE "district" = 'Texas 22'