Suffrage is the civil right to vote, or the exercise of that right. In that context it is also called political franchise.
Universal suffrage is the extension of voting privileges to all adults, without distinction to race, sex, belief or social status. It is usually considered the hallmark of modern democracies.
Equal suffrage is a term sometimes confused with Universal suffrage, although its meaning is the removal of graded votes, where a voter could possess a number of votes in accordance with income, wealth or social status.
Census suffrage is the opposite of Equal suffrage: the suffrage is limited, usually to the propertied classes, but can still be universal, i.e. including for instance women or blacks granted they meet the census.
Women's suffrage was the goal of suffragists (commonly referred to as "Suffragettes"), who led a major Liberal and Democratic movement of the early 20th century, protesting vigorously for many years demanding equality with men and the right to vote. Prominent suffragists include Susan B. Anthony, Emmeline Pankhurst, Kate Sheppard and Elizabeth Cady Stanton.
Historically, many groups have been excluded from the right to vote, on various grounds. Sometimes this exclusion is an explicit policy, clearly stated in the electoral laws; at other times it is implemented in practice by provisions that may seem to have little to do with the exclusion actually being implemented (e.g. poll taxes and literacy requirements used to keep African-Americans in the pre- Civil Rights Era American South from voting.) And sometimes a group will be permitted to vote, but the electoral system or institutions of government will be purposely designed to give them less influence than other more favored groups.
The legitimacy of democratic government is derived from suffrage.
Ethnic or racial exclusion
See universal suffrage
Exclusion on grounds of class
Up until the 19th century, many Western democracies had property qualifications in their electoral laws, that meant that only people with a certain degree of wealth could vote. Today these laws have largely been abolished. However in some "democratic" countries this still applies in practice (although perhaps unintentionally) even though not in law; most democratic countries require an address for the electors to be qualified to vote, this, in practice excludes all those who are not fortunate enough to have achieved enough wealth as to permit them to own or rent living quarters.
Exclusion on the grounds of gender
See women's suffrage
Exclusion on the grounds of age
Despite the boast of universal suffrage, all modern democracies require voters to meet age qualifications to vote and deny the right to vote to individuals below the voting age. Often overlooked, young people under the voting age make up 20-50% of the population in some countries, and have no political representation. Worldwide voting ages are not consistent, fluctuating between countries and indeed within countries, usually between 15 and 21. Following movements to enfranchise women, minorities and the poor, a world wide youth suffrage movement is now brewing. An integral part of the wider youth rights movement, youth suffrage proponents seek to lower or abolish the voting age. Of most notoriety is the proposal to lower the national voting age to 16 in the United Kingdom.
Right to vote today
Today, in most democracies, the right to vote is granted without discrimination with regard to race, ethnicity, class or gender. Citizens above the voting age in a country can normally vote in its elections, although resident aliens can vote in local elections in some countries. In some countries exceptions are made for citizens of countries with which they have close links (e.g. some members of the Commonwealth, and the members of the European Union).
It may be startling to many that the USA is one of few countries whose citizens lack a constitutional right to vote (http://reclaimdemocracy.org/political_reform/right_to_vote.html). In the U.S., voting is a privilege administered at the discretion of individual states--a situation that democracy advocates such as the National Voting Rights Institute, ReclaimDemocracy.org and the Center for Voting and Democracy are attempting to change. In 2003, U.S. Representative Jesse Jackson Jr. (D-IL)introduced House Resolution 28to (http://thomas.loc.gov/cgi-bin/query/z?c108:H.J.RES.28:) seek congressional support for a Constitutional Amendment that would address the issue.
Many countries have disenfranchisement of sentenced prisoners, in the USA voting privileges are denied to prisoners by some states, however several others (Canada and most of the countries of the European Union) allow prisoners to vote, regardless of time served, nature of the crime, etc. Some countries (and U.S. states) also deny the right to vote to those convicted of serious crimes, even after they are released from prison. In some cases (e.g. the felon disfranchisement laws found in many U.S. states) the denial of the right to vote is automatic on conviction of a serious criminal offence; in other cases (e.g. provisions found in many parts of continental Europe) the denial of the right to vote is an additional penalty that the court can choose to impose, over and above the penalty of imprisonment, such as in France or Germany. Another exemption from the right to vote is made by some countries for people in psychiatric facilities. In the United Kingdom, peers who are members of the House of Lords (all up until reforms in 1999) are also excluded from voting in general elections. In all democratic countries, young people are excluded from voting in local and national elections, though the voting age is set at different ages ranging from 15 to 21. In Canada, only 2 adult citizens cannot vote, the Chief electoral officer, and the deputy chief electoral officer.