Table: election_results_1938_3
Columns: district
incumbent
party
first_elected
result
candidates

Question: How many parties does william b. cravens represent?
SQL: SELECT COUNT("party") FROM election_results_1938_3 WHERE "incumbent" = 'William B. Cravens'

Question: What district had someone first elected in 1932?
SQL: SELECT "district" FROM election_results_1938_3 WHERE "first_elected" = 1932

Question: What candidates ran in the election when the incumbent was william j. driver?
SQL: SELECT "candidates" FROM election_results_1938_3 WHERE "incumbent" = 'William J. Driver'