It is allowed to form opposition parties that are not based on Islam, such as, secular, and Nationalist parties. It is not allowed to from parties which are not based on Islam as a doctrine and a way of life. Under democracy, political frame is divided into a ruling party and an opposition. Society is not divided in such a manner. However, the people or the Ummah council question the ruler.
Democracy allows all members of society to compete for the ruling position.
This is regardless of his credentials or personal qualities, or religious commitment. Islam demands the candidate to be male, Muslim, adult, free, and not known of misconduct and disobedience to Allah. Democracy is not consultation. Democracy is a method of ruling that contains major guidelines and details. It does not emanate from Sha'ria.