Table: election_results_28
Columns: district
incumbent
party
first_elected
result
candidates

Question: If the district is Virginia 8, who is the Incumbent?
SQL: SELECT "incumbent" FROM election_results_28 WHERE "district" = 'Virginia 8'

Question: If the district is Virginia 17, who are the candidates?
SQL: SELECT "candidates" FROM election_results_28 WHERE "district" = 'Virginia 17'

Question: In how many different parts was the incumbent Abraham B. Venable?
SQL: SELECT COUNT("party") FROM election_results_28 WHERE "incumbent" = 'Abraham B. Venable'