Voter turnout in US elections is the total number of votes cast by the voting age population (VAP), or more recently, the voting eligible population (VEP), divided by the entire voting eligible population. It is usually displayed as a percentage, showing which percentage of eligible voters actually voted.

The historical trends in voter turnout in the United States presidential elections have been shaped by

• the gradual expansion of voting rights from the initial restriction to white male property owners aged 21 or older in the early years of the country's independence to all citizens aged 18 or older in the mid-20th century.^[1]
• policies that have made it easier or harder for eligible people to register and vote
• the competitiveness of elections
• the mobilization efforts of parties, candidates and other organizations^[2]

Approximately 161 million people were registered to vote in the 2020 presidential election and roughly 96.3% ballots were submitted, totaling 158,427,986 votes. Roughly 81 million eligible voters did not cast a ballot.^[3]

For many years, voter turnout was reported as a percentage; the numerator being the total votes cast, or the votes cast for the highest office, and the denominator being the Voting Age Population (VAP), the Census Bureau's estimate of the number of persons 18 years old and older resident in the United States. The VAP, however, includes people who are not actually eligible to vote, either because they are not US citizens, or because a prior felony conviction bars them from voting under the laws in their state.^[4]

In their 2001 article in the American Political Science Review, Michael P. McDonald and Samuel Popkin developed a measure they called the Voting Eligible Population (VEP). The VEP uses "government statistical series to adjust for ineligible but included groups, such as noncitizens and felons, and eligible but excluded groups, such as overseas citizens." They argue that voter turnout in the United States has not actually declined since 1972 when calculated as a percentage of the VEP instead of the VAP.^[5]

The following table shows the available data on turnout for the voting-age population (VAP) and the voting-eligible population (VEP) since 1932.^[6][7]

* 2024 numbers estimated by the Election Lab at the University of Florida. This estimate will be revised as additional data becomes available.^[10]

The Constitution originally gave states the authority to decide who had the right to vote, and the power to decide the time place and manner of elections. Despite Constitutional amendments prohibiting restrictions of the franchise by race, sex, or against people over 18, and outlawing the poll tax, and other national legislation, states still administer voter registration and elections, in ways which can impact turnout, and variations in competitiveness between the states lead to variations in turnout.

The gradual expansion of the right to vote from only property-owning men to including all white men over 21 was an important movement in the period from 1800 to 1830.^[13] Older states with property restrictions dropped them, namely all but Rhode Island, Virginia and North Carolina by the mid-1820s. No new states had property qualifications, although three had adopted tax-paying qualifications – Ohio, Louisiana and Mississippi, of which only in Louisiana were these significant and long-lasting.^[14] The process was peaceful and widely supported, except in Rhode Island. In Rhode Island, the Dorr Rebellion of the 1840s demonstrated that the demand for equal suffrage was broad and strong, although the subsequent reform included a significant property requirement for any resident born outside of the United States. However, free black men lost voting rights in several states during this period.^[15]

The fact that a man was now legally allowed to vote did not necessarily mean he routinely voted. He had to be pulled to the polls, which became the most important role of the local parties. These parties systematically sought out potential voters and brought them to the polls. Voter turnout soared during the 1830s, reaching about 80% of the adult male population in the 1840 presidential election.^[16] Tax-paying qualifications remained in only five states by 1860 – Massachusetts, Rhode Island, Pennsylvania, Delaware and North Carolina.^[17]

Another innovative strategy for increasing voter participation and input followed. Prior to the presidential election of 1832, the Anti-Masonic Party conducted the nation's first presidential nominating convention. Held in Baltimore, Maryland, September 26–28, 1831, it transformed the process by which political parties select their presidential and vice-presidential candidates.^[18]

The passage of the Fifteenth Amendment to the United States Constitution in 1870 gave African American men the right to vote. The first record of a black man voting after the amendment's adoption was when Thomas Mundy Peterson cast his vote on March 31, 1870 in Perth Amboy, New Jersey in a referendum election, adopting a revised city charter.^[19] During Reconstruction (1865–1877), sixteen black men served in Congress, and 2,000 black men served in elected local state and federal positions.^[20] While this historic expansion of rights resulted in significant increases in the eligible voting population and may have contributed to the increases in the proportion of votes cast for president as a percentage of the total population during the 1870s, there does not seem to have been a significant long-term increase in the percentage of eligible voters who turn out for the poll. United States vs. Reese (1876), the first supreme court decision interpreting the fifteenth amendment, may have set the cause of African American male suffrage back again. In United States vs. Reese (1876), the supreme court upheld limitations on suffrage, including poll taxes, literacy tests, and a grandfather clause that exempted citizens from other voting requirements if their grandfathers had been registered voters. The Court also stated that the amendment "does not confer the right of suffrage to anyone," but it "invests citizens of the United States with the right of exemption from discrimination."^[21] This subtle distinction between suffrage and the right to be exempt from discrimination may have legitimized the disenfranchisement of blacks. The disenfranchisement of most African Americans and many poor whites in the South during the years 1890–1910 likely contributed to the decline in overall voter turnout percentages during those years visible in the chart above.

There was no systematic collection of voter turnout data by gender at a national level before 1964, but smaller local studies indicate a low turnout among female voters in the years following women's suffrage in the United States. For example, a 1924 study of voter turnout in Chicago found that "female Chicagoans were far less likely to have visited the polls on Election Day than were men in both the 1920 presidential election (46% vs. 75%) and the 1923 mayoral contest (35% vs. 63%)."^[22] The study compared reasons given by male and female non-voters and found that female non-voters were more likely to cite general indifference to politics and ignorance or timidity regarding elections than male non-voters, and that female voters were less likely to cite fear of loss of business or wages. Most significantly, however, 11% of female non-voters in the survey cited a "Disbelief in woman's voting" as the reason they did not vote.

With the exception of 1916, voter turnout declined in the decades preceding women's suffrage.^[23] Despite this decline, from the 1900s until 1920, several states passed laws supporting women's suffrage. Women were granted the right to vote in Wyoming in 1869, before the territory had become a full state in the union. In 1889, when the Wyoming constitution was drafted in preparation for statehood, it included women's suffrage. Thus Wyoming was also the first full state to grant women the right to vote.^[24] In 1893, Colorado was the first state to amend an existing constitution in order to grant women the right to vote, and several other states followed, including Utah and Idaho in 1896, Washington State in 1910, California in 1911, Oregon, Kansas, and Arizona in 1912, Alaska and Illinois in 1913, Montana and Nevada in 1914, New York in 1917; Michigan, South Dakota, and Oklahoma in 1918.^[25] Each of these suffrage laws expanded the body of eligible voters, and because women were less likely to vote than men, each of these expansions created a decline in voter turnout rates, culminating with the extremely low turnouts in the 1920 and 1924 elections after the passage of the Nineteenth Amendment.^[26]

The lack of systematic data tracking voter turnout in presidential elections before 1964 makes speculation on the voting gender gap before 1964 challenging. The data from 1964 indicates that the gender gap waned from 1964 until 1976. From 1976 onward, women have consistently turned out in higher numbers than men for presidential elections.^[27]

Age, income, and educational attainment are significant factors affecting voter turnout. Educational attainment is perhaps the best predictor of voter turnout, and in the 2008 election, those holding advanced degrees were three times more likely to vote than those with less than high school education. Income correlated well with the likelihood of voting as well.^{[28] [29]} The income correlation may be because of a correlation between income and educational attainment, rather than a direct effect of income.^[30]

The age difference is associated with youth voter turnout. Some argue that "age is an important factor in understanding voting blocs and differences" on various issues.^[31] Others argue that young people are typically "plagued" by political apathy and thus do not have strong political opinions. As strong political opinions may be considered one of the reasons behind voting,^[32] political apathy among young people is arguably a predictor for low voter turnout. One study found that potential young voters are more willing to commit to voting when they see pictures of younger candidates running for elections/office or voting for other candidates, surmising that young Americans are "voting at higher and similar rates to other Americans when there is a candidate under the age of 35 years running".^[33] As such, since most candidates running for office are pervasively over the age of 35 years,^[34] youth may not be actively voting in these elections because of a lack of representation or visibility in the political process.

Recent decades have seen increasing concern over the fact that youth voter 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 2004) – 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."^[35]

Education is another factor considered to have a major impact on voter turnout rates. A study by Burman investigated the relationship between formal education levels and voter turnout.^[36] This study demonstrated the effect of rising enrollment in college education circa 1980s, which resulted in an increase in voter turnout. However, "this was not true for political knowledge";^[36] a rise in education levels did not have any impact in identifying those with political knowledge (a signifier of civic engagement) until the 1980s election, when college education became a distinguishing factor in identifying civic participation. This article poses a multifaceted perspective on the effect of education levels on voter turnout. Based on this article, one may surmise that education has become a more powerful predictor of civic participation, discriminating more between voters and non-voters. However, this was not true for political knowledge; education levels were not a signifier of political knowledge. Gallego (2010) also contends that voter turnout tends to be higher in localities where voting mechanisms have been established and are easy to operate – i.e. voter turnout and participation tends to be high in instances where registration has been initiated by the state and the number of electoral parties is small.

One may contend that ease of access – and not education level – may be an indicator of voting behavior. Presumably larger, more urban cities will have greater budgets/resources/infrastructure dedicated to elections, which is why youth may have higher turnout rates in those cities versus more rural areas. Though youth in larger (that is, urban) cities tend to be more educated than those in rural areas (Marcus & Krupnick, 2017), perhaps there is an external variable (i.e. election infrastructure) at play. Smith and Tolbert's (2005) research reiterates that the presence of ballot initiatives and portals within a state have a positive effect on voter turnout. Another correlated finding in his study (Snyder, 2011) was that education is less important as a predictor of voter turnout in states than tend to spend more on education. Moreover, Snyder's (2011) research suggests that students are more likely to vote than non-students. It may be surmised that an increase of state investment in electoral infrastructure facilitates and education policy and programs results in increase voter turnout among youth.

Wealthier people tend to vote at higher rates. Harder and Krosnick (2008) contend that some of the reasons for this may be due to "differences in motivation or ability (sometimes both)" (Harder and Krosnick, 2008), or that less wealthy people have less energy, time, or resources to allot towards voting. Another potential reason may be that more affluent people believe they have more at stake if they don't vote than those with less income.

Since 1980, the voting gender gap has completely reversed, with a higher proportion of women voting than men in each of the last nine presidential elections. The Center for American Women and Politics summarizes how this trend can be measured differently both in terms of proportion of voters to non-voters, and in terms of the bulk number of votes cast. "In every presidential election since 1980, the proportion of eligible female adults who voted has exceeded the proportion of eligible male adults who voted [...]. In all presidential elections prior to 1980, the voter turnout rate for women was lower than the rate for men. The number of female voters has exceeded the number of male voters in every presidential election since 1969..."^[37] This gender gap has been a determining factor in several recent presidential elections, as women have been consistently about 15% more likely to support the candidate of the Democratic Party than the Republican candidate in each election since 1996.^[38]

Race and ethnicity has had an effect on voter turnout in recent years, with data from recent elections such as 2008 showing much lower turnout among people identifying as Hispanic or Asian ethnicity than other voters (see chart to the right). One factor impacting voter turnout of Black Americans is that, as of the 2000 election, 13% of Black American males are reportedly ineligible to vote nationwide because of a prior felony conviction; in certain states – Florida, Alabama, and Mississippi – disenfranchisement rates for Black American males in the 2000 election were around 30%.^[39]

Another factor influencing statistics on voter turnout is the percentage of the country's voting-age population^{[clarification needed]} who are ineligible to vote due to non-citizen status or prior felony convictions. In a 2001 article in the American Political Science Review, Michael P. McDonald and Samuel Popkin argued, that at least in the United States, voter turnout since 1972 has not actually declined when calculated for those eligible to vote, what they term the voting-eligible population.^{[40][clarification needed]} In 1972, noncitizens and ineligible felons (depending on state law) constituted about 2% of the voting-age population. By 2004, ineligible voters constituted nearly 10%.^[41] Ineligible voters are not evenly distributed across the country. For example, roughly 15% of California's voting-age population is ineligible to vote, which confounds comparisons of states.^[42]

• Voter turnout
• Voter registration in the United States

• Berman, D. and Johnson, R. (2000). "Age, ambition, and the local charter: a study in voting behavior". The Social Science Journal, 37(1), pp. 19–26.
• Burden, Barry C. (2009). "The dynamic effects of education on voter turnout". Electoral Studies. 28 (4): 540–549. doi:10.1016/j.electstud.2009.05.027.
• Gallego, A. (2010). "Understanding unequal turnout: Education and voting in comparative perspective". Electoral Studies, 29(2), pp. 239–248.
• Gershman, C. (2018). "Democracy and Democracies in Crisis". Archived from the original on November 24, 2016.
• Harder, J. and Krosnick, J. (2008). "Why Do People Vote? A Psychological Analysis of the Causes of Voter Turnout". 'Journal of Social Issues, 64(3), pp. 525–549.
• Marcus, J., & Krupnick, M. (2017). "The Rural Higher-Education Crisis". The Atlantic.
• Maslow, A. (1943). "A theory of human motivation". Psychological Review, 50(4), pp. 370–396.
• McDonald, Michael, United States Elections Project, US Elections Project
• Munsey, C. (2008). "Why do we vote?". American Psychological Association.
• Pomante, Michael J.; Schraufnagel, Scot (2015). "Candidate Age and Youth Voter Turnout". American Politics Research. 43 (3): 479–503. doi:10.1177/1532673x14554829. S2CID 156019567.
• Snyder, R. (2011). "The impact of age, education, political knowledge and political context on voter turnout". UNLV Theses, Dissertations, Professional Papers, And Capstones.
• Struyk, R. (2017). "The Democratic Party has an age problem". CNN. [Accessed June 9, 2018].
• The Economist (2014). "Why young people don't vote". [Accessed June 9, 2018].
• Tolbert, Caroline J.; Smith, Daniel A. (2005). "The Educative Effects of Ballot Initiatives on Voter Turnout". American Politics Research. 33 (2): 283–309. doi:10.1177/1532673x04271904. S2CID 154470262.

• "National Turnout Rates, 1787–2018" (United States Election Project) Archived May 16, 2021, at the Wayback Machine