Table: election_2006_data
Columns: electoral_district
registered_voters
seats_in_congress
candidates_per_party
participating_parties
total_candidates

Question: What is the number of participating parties when registered voters totaled 643629?
SQL: SELECT COUNT("participating_parties") FROM election_2006_data WHERE "registered_voters" = 643629

Question: What is the electoral district when total candidates were 35?
SQL: SELECT "electoral_district" FROM election_2006_data WHERE "total_candidates" = 35

Question: What is the number of seats in congress when the electoral district is Ucayali?
SQL: SELECT COUNT("seats_in_congress") FROM election_2006_data WHERE "electoral_district" = 'Ucayali'

Question: What is the number of seats in congress when the candidates per party is 6?
SQL: SELECT COUNT("seats_in_congress") FROM election_2006_data WHERE "candidates_per_party" = 6

Question: What is the number of total candidates when registered voters is 47742?
SQL: SELECT "total_candidates" FROM election_2006_data WHERE "registered_voters" = 47742