Most modern democracies are considered as such due to the feedback that voters do as a control of their government and country. This is done in a representative way in intervals usually of 4 years.
Some countries have additional rules to require a referendum for certain decisions, for instance changes to their constitutions or organic laws.
This has become the standard and it is assumed as the right way in many cases, but I think this is doubtful and therefore I ask.
What evidence do we have about this being enough? (with or without referendums)
If this is not enough, are there any implemented solutions that have proven to work better?
Thank you.
PD: BTW: I'm also interested in theoretical analyses when proved formally (since empirical proves are probably hard to obtain).