There remains still in the people a supreme power to remove or alter the legislative, when they find the legislative act contrary to the trust reposed in them.
Gist of Idea
The people have supreme power, to depose a legislature which has breached their trust
John Locke (Second Treatise of Government , 149)
This seems to be the most important aspect of representative democracy. It is not the power of people to make decisions, but the power to get rid of bad rulers.
Locke,John: 'Two Treatises of Government' [Everyman 1988], p.192