Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE party ( party_id number, year number, party text, governor text, lieutenant_governor text, comptroller text, attorney_general text, us_senate text )
TABLE: CREATE TABLE county ( county_id number, county_name text, population number, zip_code text )
TABLE: CREATE TABLE election ( election_id number, counties_represented text, district number, delegate text, party number, first_elected number, committee text )

### Question ###
Show the names of counties that have at least two delegates.

### Accurate SQL ###

SELECT T1.county_name FROM county AS T1 JOIN election AS T2 ON T1.county_id = T2.district GROUP BY T1.county_id HAVING COUNT(*) >= 2