Brian T. Hamel of the University of North Texas, Jan E. Leighley of American University and Jonathan Nagler of New York University analyzed the demographic composition of voters in 16 federal elections. The primary analysis pooled nearly 1.5 million voting-age citizens from the Current Population Survey Voting and Registration Supplement, covering presidential and congressional midterm elections from 1994 through 2024. The researchers also replicated the temporal analysis with Catalist voter-composition data covering 2008 through 2024.

To measure representativeness, the study calculated a representation ratio for each demographic group. The measure divides a group’s weighted share of voters by its weighted share of the adult citizen population. A ratio above 1 indicates overrepresentation among voters; a ratio below 1 indicates underrepresentation. The authors examined age, education, income, gender and race, with age grouped into ages 18–29, 30–44, 45–64 and 65 or older. Unlike group turnout rates, the ratio directly assesses a group’s electoral weight relative to its presence in the population.

Age showed the clearest difference between election types. Adults ages 18–29 had a representation ratio of 0.78 in presidential elections and 0.57 in midterms. In concrete terms, if 18–29-year-olds made up 20% of the adult citizen population, the ratios would correspond to about 16% of presidential voters and about 11% of midterm voters. Adults ages 65 and older showed the reverse pattern: their ratio increased from 1.13 in presidential elections to 1.29 in midterms.

The other demographic measures produced a different pattern. Gender, race and income showed relatively little change in representational inequality between presidential and midterm elections. Education-based inequality was substantial in both election types but did not widen much in midterms. Education was the largest source of representational inequality in presidential elections, whereas age became the largest in midterms. The authors therefore did not characterize age as the only demographic bias in American electorates; rather, they identified age as the dimension on which midterms most strongly amplified an existing imbalance.

The analysis also found a recurring electoral cycle. The researchers measured changes in representation gaps between the most and least advantaged groups in each category from one federal election to the next. The age gap widened in every midterm and narrowed in the following presidential election. Changes in the age gap were generally greater than 0.25, roughly twice the magnitude of changes observed for education, gender, income and race. The same pattern appeared in the Catalist replication, suggesting that the result was not solely an artifact of survey-based measurement.

The political implications are not neutral because age groups differed in partisan identification and policy preferences. In the 2024 Cooperative Election Study, 47% of adults ages 18–29 identified with or leaned toward the Democratic Party, compared with 42% of adults 65 and older. Support for a U.S.–Mexico border wall, increased police funding and repeal of the Affordable Care Act rose with age, while support for abortion rights, expanding Medicaid eligibility and investment in renewable energy declined. Because midterms place greater weight on older voters, they give greater influence to positions that are generally more prevalent among older age groups.

Using 2022 Cooperative Election Study data, the researchers estimated the two-party Democratic House vote share among validated voters in each age group. They then combined those age-specific vote shares using Catalist’s age distribution for voters in the 2020 presidential election, while holding age-specific vote choice fixed. The resulting counterfactual estimated a 50.1% Democratic share of the national two-party House vote, 1.5 percentage points higher than the actual 2022 two-party Democratic share. This estimate illustrates the potential electoral effect of the age composition of a midterm electorate, but it is a counterfactual calculation rather than an observed outcome.

The study identifies several possible explanations for the age pattern while noting that it did not test them directly. Younger citizens may have had fewer opportunities to develop regular voting habits, may perceive midterms as less consequential than presidential elections, or may receive less encouragement to participate when campaigns and news coverage are less prominent. The authors also described the 2018 midterm as an example in which age underrepresentation declined but did not persist: by 2022, the age gap had returned close to levels seen in earlier midterms. They identify mobilization, election salience and comparative research in other political systems as subjects for further study, while the analysis itself remains observational and does not establish which mechanism causes the disparity.

Subject of Research: Age-based voter representativeness in U.S. midterm and presidential elections

Article Title: Who votes when? Midterm and presidential voters differ primarily by age

Article References: Hamel, B. T., Leighley, J. E., & Nagler, J. (2026). Who votes when? Midterm and presidential voters differ primarily by age. PLOS One, 21(10), e0360051. https://doi.org/10.1371/journal.pone.0360051

Image Credits: AI Generated

DOI: 10.1371/journal.pone.0360051

Keywords: midterm elections, presidential elections, voter turnout, age representation, Current Population Survey, voter files, demographic inequality, U.S. elections, votes, Midterm, presidential, voters

The research, led by Monique Turner, professor and chair of the Department of Communication at MSU’s College of Communication Arts and Sciences, examined the nonviolent mobilizing outcomes of anger, including its association with political action and voting intentions. Turner and her colleagues in the department, Ellen Reinhart, a postdoctoral scholar, Dustin Carnahan, an associate professor, and David Markowitz, a Red Cedar Distinguished Professor, developed and tested a framework they call the Anger Activism Model, or AAM. The model’s central proposition is that anger does not act alone. Rather, it interacts with perceived efficacy, and in this study the researchers focused on a specific type of internal political efficacy: the belief in one’s own ability to participate in politics effectively.

While existing scholarship has explored the role of fear in politics, far less is known about how anger operates in the political arena. To address that gap, the team surveyed almost 2,000 U.S. adults five weeks before the 2024 presidential election. The timing was deliberate. By capturing respondents in the final stretch of a high-stakes campaign, the researchers could examine how anger and different forms of political efficacy related to participants’ commitment to nonviolent political activism, such as volunteering for a campaign, as well as their intention to cast a ballot.

The results revealed a striking asymmetry between two forms of political engagement. Political anger can indeed make someone politically active, but participation depends on whether people believe they can do something about what is making them angry, and on whether the goal is activism or voting. Among people who doubted they could change what angers them, stronger anger actually increased their willingness to be politically active. Yet despite anger serving as a catalyst for action in that group, people experiencing extreme anger showed lower interest in voting. In other words, the angriest respondents were among the least likely to say they would show up at the polls.

That counterintuitive finding carries significant implications for anyone who assumes that outrage is a reliable turnout strategy. The study suggests that anger alone does not exclusively mobilize; it must exist alongside a credible pathway to action. Communication professionals and political campaigns, the researchers argue, must offer concrete ways for people to act, and they may need additional efforts to convert anger into votes, because those who feel the most intense anger may be the least inclined to participate electorally. Relying on extreme anger to encourage voting, the authors warn, could backfire among people who already feel powerless to change their circumstances.

Turner emphasizes that the findings should not be read as a dismissal of anger as a political force. Anger, she notes, does not always equate to aggression or violence. When people are empowered to change angering situations, they are more likely to engage in prosocial behaviors, from volunteering to peaceful organizing. The key variable is empowerment. It is important to understand that anger is a mobilizer, Turner said, but our study calls attention to the fact that the kind of action people take depends on whether they feel change is possible.

From a technical standpoint, the study’s design helps clarify why previous assumptions about anger and mobilization have been inconsistent. By distinguishing between internal political efficacy, a person’s belief in their own capacity to participate effectively, and the emotional intensity of anger itself, the Anger Activism Model treats these as interacting rather than independent predictors. The same level of anger can produce very different behavioral outcomes depending on where a person falls on the efficacy spectrum. For individuals low in efficacy, anger appears to push them toward forms of activism that may feel more immediately expressive, while the act of voting, which requires confidence that a ballot can alter a political outcome, becomes less appealing as anger intensifies without a sense of agency.

The practical consequences extend well beyond campaign strategy. With political polarization deepening across the United States, understanding the role of political anger has become a pressing concern for researchers, policymakers and civic professionals alike. The findings suggest that efforts to encourage civic participation may need to do more than tap into voters’ anger. Rather, the researchers argue, those seeking to boost engagement must understand that people need to hold the belief that they can drive change. That means pairing emotional appeals with tangible, credible opportunities for action, and designing outreach that builds a sense of efficacy rather than assuming it already exists.

For practitioners, the research adds a valuable layer to the ongoing conversation about the role of anger in contemporary politics. Anger can be an important vehicle for mobilization, but it is not a self-sufficient one. As the 2026 midterms approach and voters report feeling everything from excitement to fear, the MSU team’s work offers a reminder that the emotional temperature of the electorate matters less than whether individuals believe their actions, whether a ballot, a phone call or a volunteer shift, can actually change the situations that anger them. In a political environment where outrage is abundant and agency often feels scarce, the study suggests that the campaigns and organizations that succeed will be those that supply not just reasons to be angry, but believable routes to making a difference.

Subject of Research: How political anger and perceived efficacy interact to shape nonviolent political activism and voting intentions

Article Title: MSU research: Belief in change matters more than political anger

Article References: MSU research: Belief in change matters more than political anger. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: political psychology, political anger, voter turnout, civic engagement, political efficacy, Michigan State University, PLOS ONE, 2026 midterm elections, political communication, Anger Activism Model, research, Belief

The review employs the Theory–Context–Methods (TCM) framework, a structured approach to literature synthesis that organizes existing scholarship along three axes: the theories researchers invoke, the contexts they study, and the methods they use. This architecture allows the authors to move beyond a simple catalog of findings and instead diagnose the anatomy of an entire research field. Their analysis identifies eight dominant theoretical perspectives through which scholars have connected altruism to the ballot box: altruistic voting, expressive behavior, sociotropic concern, prosocial motivation, social identity influence, post-conflict engagement, ethical and rational choice voting, and behavioral-evolutionary prosociality. Crucially, the authors find that these perspectives have developed largely in isolation from one another, with limited theoretical integration—a fragmentation that, they argue, has slowed the field’s cumulative progress.

The intellectual roots of the altruism-and-voting debate trace back to the rational choice tradition. Anthony Downs’s 1957 economic theory of democracy assumed voters act to maximize personal benefit, a logic that famously struggles to explain turnout in large electorates. Later work by Riker and Ordeshook in 1968 patched the model with a civic-duty term, but the deeper puzzle persisted. In 2007, Aaron Edlin, Andrew Gelman, and Noah Kaplan offered a landmark resolution: voting can be rational precisely because voters care about others. If a voter weighs the welfare of millions of fellow citizens, not just her own, then even a minuscule probability of casting the decisive vote can justify the cost of participation. Özgür Evren’s 2012 formal work extended this insight, showing that altruism alone can sustain high turnout without invoking civic duty or cooperative norms.

Empirical research has since tested these ideas in the laboratory, in survey data, and in the field. James Fowler’s 2006 study in the Journal of Politics linked measured altruism directly to turnout, and his 2007 work with Christopher Kam connected social identity, altruism, and political participation into a single explanatory chain. In personality psychology, Ingo Zettler, Benjamin Hilbig, and colleagues showed in 2011 that dispositional altruism predicts political attitudes and behavior—hence their memorable title, ‘Altruism at the ballots.’ Meanwhile, experimentalists such as Costas Panagopoulos have demonstrated through large-scale field experiments that prosocial motivation can be activated: gratitude expressions after voting, descriptive social norms (‘everybody’s voting’), and even implicit social-pressure cues like eyespot images measurably boost turnout, suggesting that the prosocial instincts underlying voting are surprisingly easy to nudge.

A second major strand concerns sociotropic voting—choosing based on the state of the nation rather than one’s own pocket. Studies of redistribution preferences, including work by Michael Bechtel and Rebecca Liesch on welfare reforms, disentangle egoistic from sociotropic origins of voter choices and find that concern for the collective often outweighs narrow self-interest. Related research on pro-environmental voting in Spain by María del Carmen Aguilar-Luzón and colleagues shows that values, environmental beliefs, and connection with nature predict green ballots, while Danish work on woody biomass energy applies a cognitive hierarchy model to explain when citizens intend to vote for continued sustainable energy use. These findings suggest that altruism operates not only on the decision to vote but on the choice of whom to vote for, extending to future generations, strangers, and even nonhuman nature.

Perhaps the most dramatic evidence comes from the study of political violence and post-conflict engagement. Christopher Blattman’s influential 2009 study in the American Political Science Review found that war exposure in Uganda increased political participation, and recent work by Ana Arjona, Mónica Chacón, and Leopoldo García-Montoya on Colombia, published in PNAS, shows that political assassinations can raise turnout. Experiments in Kenya by Nathan Ferguson and Maike Leroch reveal behavioral impacts of violence in incentivized games, while research by Haas, Hassan, and Morton shows that negative campaigns and democratic experience shape interpersonal trust and prosocial behavior. These studies suggest that shared suffering and collective threat can forge a prosocial bond that translates into civic engagement—an unsettling but powerful illustration of how altruism and politics intertwine under the harshest conditions.

Yet the review’s contextual analysis exposes a serious imbalance. The literature is heavily concentrated in Western democracies, with thematic emphasis on redistribution, environmental values, and political violence, while entire regions—Latin America beyond a handful of cases, the Middle East, and Southeast Asia—remain strikingly understudied. This geographic skew matters because the moral and institutional environments that condition altruistic behavior vary enormously across societies. Whether the altruism-turnout link holds under clientelism, authoritarian populism, or weak electoral institutions is largely an open question, and the authors warn that current theories may be quietly parochial, built on assumptions that do not travel well beyond established democracies.

Methodologically, the field shows a similar narrowness. The review finds the literature dominated by quantitative designs, with far fewer qualitative studies, mixed methods, longitudinal analyses, experimental approaches, and conceptual contributions. This matters for a question as causally delicate as altruism: correlational survey data can show that altruistic people vote more, but teasing out whether altruism causes turnout, whether political engagement cultivates altruism, or whether both flow from deeper dispositions requires the kind of longitudinal and experimental designs the field has been slow to embrace. The authors’ proposed agenda therefore calls for theoretical synthesis across the eight perspectives, deliberate geographic and thematic expansion, and methodological diversification—including more conceptual work to clarify what ‘political altruism’ actually denotes across these literatures.

The stakes of this research agenda extend well beyond academic housekeeping. Understanding the moral foundations of democratic participation speaks to some of the most urgent practical questions facing democracies today: how to mobilize disengaged citizens, how to design get-out-the-vote interventions that appeal to prosocial rather than purely self-interested motives, and how to rebuild the social trust that decades of research—from Robert Putnam’s ‘Bowling Alone’ onward—have shown to be eroding. If voting is, at its core, an act of concern for others, then fostering prosocial political engagement becomes a matter of cultivating and activating that concern. By mapping where the science of altruistic voting stands, where it has never looked, and how it must evolve, Zarpli, Coşgun, and Kocaman have provided scholars, practitioners, and policymakers with a rigorous roadmap for understanding one of democracy’s most quietly heroic behaviors: showing up, ballot in hand, not for oneself but for everyone else.

Subject of Research: The role of altruism in voter behavior, synthesized through a systematic literature review

Article Title: Altruism and voter behavior: a systematic literature review and agenda for future research employing TCM framework

Article References: Zarpli, Ç., Coşgun, M., & Kocaman, R. (2026). Altruism and voter behavior: a systematic literature review and agenda for future research employing TCM framework. SN Social Sciences, 6(10), Article 456. https://doi.org/10.1007/s43545-026-01750-9

Image Credits: AI Generated

DOI: 10.1007/s43545-026-01750-9

Keywords: altruism, voter behavior, voter turnout, political participation, sociotropic voting, prosocial behavior, rational choice, social identity, systematic literature review, TCM framework, political psychology, democracy