Psychological Shifts Among U.S. Voters After 2024 Election: A Longitudinal Study

A seven-wave longitudinal survey followed 623 U.S. voters from three weeks before the 2024 election to one month after President Donald Trump’s inauguration (?20 weeks). The sample was evenly split between Democrats and Republicans, averaged 45 years old, and was 36 % male. Participants reported on well-being, optimism, personal control, emotions, cynicism, disrespect, conspiracy mentality, and institutional trust, and were labeled “winners” or “losers” based on their vote.

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Recent U.S. polls show deepening affective polarization: Democrats and Republicans hold strong negative feelings toward each other. Pew Research Center reports record-high national division; Gallup notes rising institutional distrust that varies with the governing party. Scholars cite ideological sorting, media fragmentation, and threat-based political rhetoric as drivers.

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Democratic supporters showed declines in well-being, optimism, personal control, and institutional trust, and increases in cynicism, disrespect, and conspiracy mentality; their positive emotions fell while negative emotions rose, with the partisan gap widest immediately after the election. Republican supporters exhibited opposite trends, gaining optimism, personal control, and trust, and reducing cynicism. The pre-election trust gap reversed, leaving Republicans with higher institutional trust than Democrats, and the optimism gap peaked post-results. Most changes persisted for up to four months, with modest reversion after inauguration.

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The results challenge the notion of fixed liberal-conservative psychological profiles, showing that party control can reshape optimism, trust, and susceptibility to conspiratorial thinking. Recognizing these dynamics matters for policymakers, mental-health professionals, and scholars studying political impacts on public well-being.

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Authors Olga Stavrova, Dongning Ren, Sangmin Kim, and Kathleen D. Vohs concluded that the findings overturn the idea of fixed psychological differences between liberals and conservatives, emphasizing that these differences can shift with the party in power. They note the study covers only the 2024 election, so results may differ for other events.

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Authors acknowledge changes may be less pronounced outside a presidential election. Attrition reduced the sample from 747 initial respondents to 515 at study end, possibly affecting representativeness.

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No contradictory findings appear. Gaps include lack of data on later elections, reliance on self-reports, and limited demographic diversity beyond age and gender.

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> “These results challenge the notion of inherent psychological differences between liberals and conservatives, highlighting how such differences can shift depending on which party holds power.” — Olga Stavrova, lead author

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The authors suggest extending longitudinal research to other electoral cycles and political crises to determine whether similar psychological reversals occur under different partisan outcomes.

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