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."
Hispanic and Latino Americans
The United States has a population of 50 million of Hispanic and Latino Americans, of them, 27 Million are citizens eligible to vote (13% of total eligible voters), therefore Hispanics have a very important effect on presidential elections since the vote difference between two main parties is usually around 4%.