Millennials, also known as Generation Y, are the demographic cohort following Generation X and preceding Generation Z. The generation is typically defined as people born from 1981 to 1996. Millennials are reshaping political discourse, showing evolving attitudes towards governance, social issues, and economic policies. Their increasing political participation and distinct generational identity signify a transformative phase in contemporary politics, with potential long-term implications for national and global political trends.

American millennials exhibit a complex spectrum of political views, paralleling broader generational shifts in attitudes towards social, economic, and political issues. Surveys indicate a significant portion of millennials' political views align with their parents, though a notable fraction express more liberal tendencies. Key issues for US millennials include support for same-sex marriage, varying attitudes towards the LGBT community, and a more moderate stance on political ideologies compared to older generations. Millennials in the United States demonstrate increasing skepticism towards capitalism, with a preference for socialism seen in younger segments of the demographic. Canadian millennials played a crucial role in the election of Justin Trudeau, driven by social and economic liberal values. Despite historically low political participation, the 2015 federal election saw a surge in youth voter turnout, influenced by Trudeau's progressive campaign promises.

British millennials, characterized by a relative political disengagement in their early years, have shown liberal tendencies on social and economic matters, favoring individual liberty and limited government intervention. Significant political moments like the Brexit referendum mobilized young voters, displaying a strong preference for remaining in the European Union, highlighting generational divides in political priorities and attitudes.

Across Europe, millennials are part of a larger shift towards post-materialist values, emphasizing environmentalism, social liberalism, and global citizenship. This generational shift is contributing to changing political landscapes, challenging traditional party alignments and contributing to the rise of new political movements. French millennials, while exempt from mandatory military service, still engage in a Defense and Citizenship Day, reflecting continued engagement with national civic duties. A significant majority support the reintroduction of some form of national service, reflecting broader desires for national cohesion and integration.

American millennials

Views

A 2004 Gallup poll of Americans aged 13 to 17 found that 71% said their social and political views were more or less the same as those of their parents. 21% thought they were more liberal and 7% more conservative. According to demographer and public policy analyst Philip Longman, "even among baby boomers, those who wound up having children have turned out to be remarkably similar to their parents in their attitudes about "family" values." In the postwar era, most returning servicemen looked forward to "making a home and raising a family" with their wives and lovers, and for many men, family life was a source of fulfillment and a refuge from the stress of their careers. Life in the late 1940s and 1950s was centered about the family and the family was centered around children. Researchers found that while only 9% of teenagers who identified with the Republican Party considered themselves more conservative than their parents, compared to 77% who shared their parents' views, 25% of adolescents who identified with the Democratic Party and 28% of politically independent teens said they were more liberal than their parents. Another 2004 Gallup poll of the same age group found that a clear majority of teenagers considered themselves to be politically moderate, 56%. Only 7% and 18% deemed themselves very conservative or conservative, respectively, and 10% and 6% believed they were liberal or very liberal, respectively. (The bar plot roughly resembles a Gaussian distribution or an isosceles triangle centered around moderates. See right.) By comparing with a 2004 poll of Americans aged 18 and over, Gallup discovered that teens were substantially more moderate than adults (56% to 38%), less conservative (25% to 40%), and just about as liberal (16% to 19%). However, political scientist Elias Dinas discovered, by studying the results from the Political Socialisation Panel Study and further data from the United Kingdom and the United States, that while children born to politically engaged parents tended to be politically engaged themselves, those who absorbed their parents' views the earliest were also the most likely to abandon them later in life.

The Economist observed in 2013 that, like their British counterparts, millennials in the United States held more positive attitudes towards recognizing same-sex marriage than older demographic cohorts. However, a 2018 poll conducted by Harris on behalf of the LGBT advocacy group GLAAD found that despite being frequently described as the most tolerant segment of society, people aged 18 to 34—most millennials and the oldest members of Generation Z—have become less accepting of LGBT individuals compared to previous years. In 2016, 63% of Americans in that age group said they felt comfortable interacting with members of the LGBT community; that number dropped to 53% in 2017 and then to 45% in 2018. On top of that, more people reported discomfort learning that a family member was LGBT (from 29% in 2017 to 36% in 2018), having a child learning LGBT history (30% to 39%), or having an LGBT doctor (27% to 34%). Harris found that young women were driving this development; their overall comfort levels dived from 64% in 2017 to 52% in 2018. In general, the fall of comfort levels was the steepest among people aged 18 to 34 between 2016 and 2018. (Seniors aged 72 or above became more tolerant of LGBT doctors or having their (grand) children taking LGBT history lessons during the same period, albeit with a bump in discomfort levels in 2017.) Results from this Harris poll were released on the 50th anniversary of the riots that broke out in Stonewall Inn, New York City, in June 1969, thought to be the start of the LGBT rights movement. At that time, homosexuality was considered a mental illness or a crime in many U.S. states.

In 2018, Gallup conducted a survey of almost 14,000 Americans from all 50 states and the District of Columbia aged 18 and over on their political sympathies. They found that overall, younger adults tended to lean liberal while older adults tilted conservative. More specifically, groups with strong conservative leanings included the elderly, residents of the Midwest and the South, and people with some or no college education. Groups with strong liberal leanings were adults with advanced degrees, whereas those with moderate liberal leanings included younger adults (18 to 29 and 30 to 49), women, and residents of the East. Gallup found little variations by income groups compared to the national average. Among adults between the ages of 18 and 29—older Generation Z and younger millennials—Gallup found that 30% identified as liberals, 40% as moderates, and 26% as conservatives. Among adults aged 30 to 49—older millennials and younger Generation X—they found that 30% considered themselves liberals, 37% moderates, and 29% conservatives.(See above.) Between 1992 and 2018, the number of people identifying as liberals steadily increased, 17% to 26%, mainly at the expense of the group identifying as moderates. Meanwhile, the proportion of conservatives remained largely unchanged, albeit with fluctuations. Between 1994 and 2018, the number of members of the Democratic Party identifying as liberal rose from 25% to 51%, as the number of both moderates and conservatives gradually fell. Liberals became a majority in this political party for the first time in 2018. During the same period, in the Republican Party, the proportion of people calling themselves conservatives climbed from 58% to 73% while the numbers of moderates and liberals both dropped. In other words, this political party saw its conservative majority expanding. Meanwhile, among political independents, the percentage of moderates, the dominant group, remained largely unchanged.2018 surveys of American teenagers 13 to 17 and adults aged 18 or over conducted by the Pew Research Center found that millennials and Generation Z held similar views on various political and social issues. More specifically, 56% of millennials believed that climate change is real and is due to human activities while only 8% reject the scientific consensus on climate change. 64% wanted the government to play a more active role in solving their problems. 65% were indifferent towards pre-nuptial cohabitation. 48% considered single motherhood to be neither a positive or a negative for society. 61% saw increased ethnic or racial diversity as good for society. 47% did the same for same-sex marriage, and 53% interracial marriage. (See chart.) In most cases, millennials tended hold quite different views from the Silent Generation, with the Baby Boomers and Generation X in between. In the case of financial responsibility in a two-parent household, though, majorities from across the generations answered that it should be shared, with 58% for the Silent Generation, 73% for the Baby Boomers, 78% for Generation X, and 79% for both the millennials and Generation Z. Across all the generations surveyed, at least 84% thought that both parents ought to be responsible for rearing children. Very few thought that fathers should be the ones mainly responsible for taking care of children.

In 2015, a Pew Research study found 40% of millennials in the United States supported government restriction of public speech offensive to minority groups. Support for restricting offensive speech was lower among older generations, with 27% of Gen Xers, 24% of Baby Boomers, and only 12% of the Silent Generation supporting such restrictions. Pew Research noted similar age related trends in the United Kingdom, but not in Germany and Spain, where millennials were less supportive of restricting offensive speech than older generations. In France, Italy, and Poland no significant age differences were observed. In the U.S. and UK during the mid-2010s, younger millennials brought changes to higher education via drawing attention to microaggressions and advocating for implementation of safe spaces and trigger warnings in the university setting. Critics of such changes have raised concerns regarding their impact on free speech, asserting these changes can promote censorship, while proponents have described these changes as promoting inclusiveness.

A 2018 Gallup poll found that people aged 18 to 29 have a more favorable view of socialism than capitalism, 51% to 45%. Nationally, 56% of Americans prefer capitalism compared to 37% who favor socialism. Older Americans consistently prefer capitalism to socialism. Whether the current attitudes of millennials and Generation Z on capitalism and socialism will persist or dissipate as they grow older remains to be seen.

Gallup polls conducted in 2019 revealed that 62% of people aged 18 to 29—older members of Generation Z and younger millennials—support giving women access to abortion while 33% opposed. In general, the older someone was, the less likely that they supported abortion. 56% of people aged 65 or over did not approve of abortion compared to 37% who did. (See chart to the right.) Gallup found in 2018 that nationwide, Americans are split on the issue of abortion, with equal numbers of people considering themselves "pro-life" or "pro-choice", 48%.