Suffrage is often conceived in terms of elections for representatives; however, suffrage applies equally to initiative and referendum. Suffrage describes not only the legal right to vote, but also the practical question of whether a question will be put to a vote. The utility of suffrage is reduced when important questions are decided unilaterally by elected or non-elected representatives.
In most democracies, eligible voters can vote in elections of representatives. Voting on issues by initiative may be available in some jurisdictions but not others. For example, Switzerland permits initiatives at all levels of government whereas the United States does not offer initiatives at the federal level or in many states. That new constitutions must be approved by referendum is considered natural law.[citation needed]
Citizens become eligible to vote after reaching the voting age, which is typically 18 years as of 2012. Most democracies no longer extend different rights to vote on the basis of sex or race. Resident aliens can vote in some countries and in others exceptions are made for citizens of countries with which they have close links (e.g. some members of the Commonwealth of Nations, and the members of the European