Youth vote in the United States
The youth vote in the United States is a political term used to describe 18- to 24-year-olds and their voting habits. Many policy areas specifically affect the youth of the United States, such as education issues and the juvenile justice system. The general trend in voter turnout for American elections has been decreasing for all age groups, but "young people's participation has taken the biggest nosedive". This low youth turnout is part of the generational trend of voting activity. Young people have the lowest turnout, though as the individual ages, turnout increases to a peak at the age of 50 and then falls again. 
Ever since 18-year-olds were given the right to vote in 1972, youth have been under represented at the polls. In 1976, one of the first elections in which 18-year-olds were able to vote, 18-24 year-olds made up 18 percent of all eligible voters in America, but only 13 percent actually voted - an under-representation of one-third. In the next election in 1978, youth were under-represented by 50 percent. "Seven out of ten young people…did not vote in the 1996 presidential election… 20 percent below the general turnout". In 1998, out of the 13 percent of eligible youth voters in America, only five percent voted. During the competitive presidential race of 2000, 36 percent of youth turned out to vote and in 2004, the "banner year in the history of youth voting," 47 percent of the American youth voted. Recently, in the 2008 U.S. Presidential election, the number of youth voters tripled and even quadrupled in some states compared to the 2004 elections.
Presidency of Richard Nixon
When Congress extended the Voting Rights Act of 1965 in 1970 it included a provision lowering the age qualification to vote in all elections—federal, state, and local—to 18. Later that year, in "Oregon v. Mitchell" (1970), the Supreme Court held that Congress had the authority to lower the voting age qualification in federal elections, but not the authority to do so in state and local elections. Nixon sent a letter to Congress supporting a constitutional amendment to lower the voting age, and Congress quickly moved forward with a proposed constitutional amendment guaranteeing the 18 year-old vote. Sent to the states for ratification on March 23, 1971, the proposal became the Twenty-sixth Amendment to the United States Constitution on July 1, 1973, after being ratified by the requisite number of states (38).