Table: election_results_1942_3
Columns: district
incumbent
party
first_elected
result
candidates

Question: what was the number of candidates when Leon Sacks was incumbent?
SQL: SELECT COUNT("candidates") FROM election_results_1942_3 WHERE "incumbent" = 'Leon Sacks'

Question: What was the result in Pennsylvania 13?
SQL: SELECT "result" FROM election_results_1942_3 WHERE "district" = 'Pennsylvania 13'

Question: Who was the incumbent in Pennsylvania 27?
SQL: SELECT "incumbent" FROM election_results_1942_3 WHERE "district" = 'Pennsylvania 27'