How many parties were first elected in 1805?
CREATE TABLE table_2668374_18 (party VARCHAR, first_elected VARCHAR)
SELECT COUNT(party) FROM table_2668374_18 WHERE first_elected = "1805"
### Context: CREATE TABLE table_2668374_18 (party VARCHAR, first_elected VARCHAR) ### Question: How many parties were first elected in 1805? ### Answer: SELECT COUNT(party) FROM table_2668374_18 WHERE first_elected = "1805"