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 table_2668243_20 (party VARCHAR, incumbent VARCHAR)

### Question ###
 What party was represented by incumbent Richard Coulter ? 

### Accurate SQL ###

SELECT party FROM table_2668243_20 WHERE incumbent = "Richard Coulter"