Final answer:
Voter turnout rates vary by age, with older Americans traditionally voting at higher rates than younger ones. Historically low engagement among young people has seen improvements, particularly during elections with candidates that resonate with younger demographics and through the influence of social media and online mobilization efforts.
Step-by-step explanation:
The percentage of each age group that votes in presidential elections varies, with older Americans generally voting at higher rates than younger ones. Historically, the voter turnout rates were highest among voters aged 65 and over, while the lowest turnout was seen in the youngest voters, those aged 18 to 29. Notably, voter turnout among young people has shown a significant increase over time, largely due to efforts by organizations mobilizing voter registration and a rise in political engagement facilitated by technology and appealing candidates.
In the 2016 presidential elections, 51 percent of eligible voters between 18 to 24 years old registered, and 39 percent of them voted. In contrast, 75 percent of those aged 65 to 74 registered, and 68 percent of them voted. The turnout rates have historically fluctuated, with certain elections, such as the one in 2008, witnessing a higher youth vote due to factors including the candidacy of Barack Obama, which inspired college-aged voters and showcased the impact of the internet and social media on political engagement.