Table: us_house_1924_elections
Columns: district
incumbent
party
first_elected
result
candidates

Question:  how many party with incumbent being whitmell p. martin
SQL: SELECT COUNT("party") FROM us_house_1924_elections WHERE "incumbent" = 'Whitmell P. Martin'

Question: who is the the candidates with incumbent being james o'connor
SQL: SELECT "candidates" FROM us_house_1924_elections WHERE "incumbent" = 'James O''Connor'

Question:  how many incumbent with first elected being 1924
SQL: SELECT COUNT("incumbent") FROM us_house_1924_elections WHERE "first_elected" = 1924