Voter turnout in the United States presidential elections
Recent decades have seen increasing concern over the fact that youth voting turnout is consistently lower than turnout among older generations. Several programs to increase the rates of voting among young people—such as MTV's "Rock the Vote" (founded in 1990) and the "Vote or Die" initiative (starting in 2012)—may have marginally increased turnouts of those between the ages of 18 and 25 to vote. However, the "Stanford Social Innovation Review" found no evidence of a decline in youth voter turnout. In fact, they argue that "Millennials are turning out at similar rates to the previous two generations when they face their first elections."
Poll tax
Prior to the mid 20th century, a poll tax was implemented in some U.S. state and local jurisdictions and paying it was a requirement before one could exercise their right to vote. After this right was extended to all races by the Fifteenth Amendment to the Constitution, many Southern states enacted poll taxes as a means of excluding African-American voters, most of whom were dirt poor and unable to pay a tax. So as not to disenfranchise the many poor whites, such laws typically included a grandfather clause, exempting from the tax any adult male whose father or grandfather had voted. The effect was to exempt whites from the tax blacks had to pay, because no black fathers or grandfathers had been able to vote. The poll tax, along with literacy tests and extra-legal intimidation, achieved the desired effect of disenfranchising African Americans. Often in US discussions, the term "poll tax" is used to mean a tax that must be paid in order to vote, rather than a capitation tax simply. The Twenty-fourth Amendment, ratified in 1964, prohibits both Congress and the states from conditioning the right to vote on payment of a poll tax or any other type of tax.