Democracy began in ancient Greece, where citizens participated in the decisions of their city, for example in Athens. This form of participation is called direct democracy and was possible only for male citizens.
On the other hand, due to population growth, direct democracy is no longer possible (Thousands of citizens met to hold a dialogue in an assembly for the purpose of making a decision). For that reason, our democracy is representative, that is, citizens participate in decisions through other citizens whom they have appointed as their representatives.
In Mexico, according to the constitution, power is divided into executive, legislative and judicial branches. Citizens participate through direct voting in the election of the holder of the executive power in the 3 levels of government: Federal (President of the Republic), state (Governor of the entity) and municipal (Municipal President).
The citizens also participate in the elections of their representatives in the congress of the union (Chamber of deputies and senators).