Table: election_results_1996_2
Columns: district
incumbent
party
first_elected
result
candidates

Question: What district first elected in 1978?
SQL: SELECT "district" FROM election_results_1996_2 WHERE "first_elected" = 1978

Question: What district was incumbent Jerry Kleczka in?
SQL: SELECT "district" FROM election_results_1996_2 WHERE "incumbent" = 'Jerry Kleczka'

Question: How many districts had results related to incumbent Toby Roth?
SQL: SELECT COUNT("result") FROM election_results_1996_2 WHERE "incumbent" = 'Toby Roth'

Question: Who were the candidates in district Wisconsin 1?
SQL: SELECT "candidates" FROM election_results_1996_2 WHERE "district" = 'Wisconsin 1'