Question: Which district has more than 169359 2009 electorates and a constituency of 84?
SQL: SELECT "District" FROM "2-18508143-1" WHERE "Number of electorates (2009)" > 169359.0 AND "Constituency number" = '84';

Question: Who has a constituency of 84?
SQL: SELECT "Name" FROM "2-18508143-1" WHERE "Constituency number" = '84';