Full Idea
Rousseau's idea of popular sovereignty is a much more radical idea of self-government, because he insists that the consent of the people has to have a real means of expression.
Gist of Idea
Rousseau insists that popular sovereignty needs a means of expressing consent
Source
report of Jean-Jacques Rousseau (The Social Contract (tr Cress) [1762]) by Johanna Oksala - Political Philosophy: all that matters Ch.5
Book Reference
Oksala,Johanna: 'Political Philosophy' [Hodder and Stoughton 2013], p.62
A Reaction
Presumably Hobbes's 'contract' is forgotten in the mists of time, and ceases to be of any interest to a ruler (such as Charles I, who thought God must have appointed him). Perhaps Britain needs an annual ceremony reaffirming the monarch.
Related Idea
Idea 20566 Hobbes says the people voluntarily give up their sovereignty, in a contract with a ruler [Hobbes, by Oksala]