El Salvador

Article 3 states:

Suffrage is a right and responsibility of citizens. The exercise is not delegable or renounceable.

Excerpt from the Electoral Code (1992, last amended 2012)

Article 72 states:

The political rights of the citizen are:

• (1) The exercise of suffrage;
• (2) To associate oneself to constitute political parties in accordance with the law and to join those already formed;
• (3) To opt for public posts complying with the requirements determined by this Constitution and secondary laws.

Excerpt from the Constitution of the Republic of El Salvador (1983, last amended 2003)