 What party was represented by incumbent Richard Coulter ? 
CREATE TABLE table_2668243_20 (party VARCHAR, incumbent VARCHAR)
SELECT party FROM table_2668243_20 WHERE incumbent = "Richard Coulter"
### Context: CREATE TABLE table_2668243_20 (party VARCHAR, incumbent VARCHAR) ### Question:  What party was represented by incumbent Richard Coulter ?  ### Answer: SELECT party FROM table_2668243_20 WHERE incumbent = "Richard Coulter"