Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_21132404_1 (political_parties VARCHAR, _percentage_2006 VARCHAR)
### Question:
How many political parties had a %2006 rating of 43.5?
### Answer:
SELECT COUNT(political_parties) FROM table_21132404_1 WHERE _percentage_2006 = "43.5"