Table: election_results_1950
Columns: district
incumbent
party
first_elected
result
candidates

Question: What party does sid simpson represent?
SQL: SELECT "party" FROM election_results_1950 WHERE "incumbent" = 'Sid Simpson'

Question: How many candidates ran against barratt o'hara?
SQL: SELECT COUNT("candidates") FROM election_results_1950 WHERE "incumbent" = 'Barratt O''Hara'

Question: What year was incumbent barratt o'hara first elected?
SQL: SELECT "first_elected" FROM election_results_1950 WHERE "incumbent" = 'Barratt O''Hara'