What are the delegate and name of the county they belong to, for each county?
SELECT T2.Delegate ,  T1.County_name FROM county AS T1 JOIN election AS T2 ON T1.County_id  =  T2.District
delegate refers to T2.Delegate; name of the county refers to T1.County_name; belong to refers to JOIN operation between tables on matching county identifier; for each county implies grouping or listing all unique county entries.