Table: us_house_2006_elections
Columns: district
incumbent
party
first_elected
results

Question: What is the party of the california 35 district?
SQL: SELECT "party" FROM us_house_2006_elections WHERE "district" = 'california 35'

Question: What is the earliest first elected date of incumbent howard mckeon?
SQL: SELECT MIN("first_elected") FROM us_house_2006_elections WHERE "incumbent" = 'howard mckeon'

Question: What district has a democratic party?
SQL: SELECT "district" FROM us_house_2006_elections WHERE "party" = 'democratic'