Name the total number of party for willis alston
CREATE TABLE table_2668243_18 (
    party VARCHAR,
    incumbent VARCHAR
)
SELECT COUNT(party) FROM table_2668243_18 WHERE incumbent = "Willis Alston"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Name the total number of party for willis alston ### Input: CREATE TABLE table_2668243_18 (
    party VARCHAR,
    incumbent VARCHAR
) ### Response: SELECT COUNT(party) FROM table_2668243_18 WHERE incumbent = "Willis Alston"