Question

what is main basic principle of democracy?

Answer 1

the source of the authority of government—is a fundamental principle of democracy. The political equality of all citizens is an essential principle of democracy. In a democracy, the just powers of government are based upon the consent of the governed.

Answer 2

Each of these 'basic' to democracy, meaning that democracy can't exist without all of them.

1. The Rule of Law

2. Freedom of the Press 

3. Respect of human rights 

4. Active Political Processes

5. Enlightened Citizens