This document discusses the history of suffrage and voting rights in the United States. It begins by noting that the Constitution originally left voter qualifications up to the states, most of which only allowed white, male property owners to vote. Over the next 200 years, voting rights gradually expanded through constitutional amendments and federal legislation. Key milestones included the 15th, 19th, 23rd, 24th, and 26th amendments, as well as the Voting Rights Act of 1965. Today, nearly all citizens over 18 can vote, though states still impose residency and registration requirements. Sociological factors like gender, race, religion, education and geography continue to influence voting patterns in the US.