Dislike of general opinion makes for tight elections

Send us Fan MailUnderstanding voter behaviour requires moving beyond simplistic assumptions of individual rationality. Examining social networks, peer influence, and sensitivity to prevailing trends, significantly as amplified by opinion polls, offers a more nuanced and accurate framework for analyzing electoral outcomes. Applying statistical mechanics, specifically the Ising model provides a powerful tool for exploring these dynamics and understanding the emergence of phenomena like the "split society" phase.Abstract:In modern democracies, the outcome of elections and referendums is often remarkably tight. The repetition of these divisive events is the hallmark of a split society; to the physicist, however, it is an astonishing feat for such extensive collections of diverse individuals. Many sociophysics models reproduce the emergence of collective human behaviour with interacting agents, which respond to their environment according to simple rules modulated by random fluctuations. A paragon of this class is the Ising model, which, when interactions are strong, predicts that order can emerge from a chaotic initial state. In contrast with many elections, however, this model favours a substantial majority. Here, we introduce a new element to this classical theory, which accounts for the influence of opinion polls on the electorate. This brings about a new phase in which two groups divide their opinion equally. These political camps are spatially segregated, and the sharp boundary that separates them makes the system size-dependent, even in the limit of a large electorate. Election data show that, over the last 30 years, countries with more than a million voters often found themselves in this state, whereas elections in smaller countries yielded more consensual results. This transition hinges on the electorate's awareness of the general opinion.More information: O. Devauchelle et al., Dislike of general opinion makes for tight elections, Physical Review E (2024). DOI: 10.1103/PhysRevE.109.044106. On arXiv: DOI: 10.48550/arxiv.2402.12207  https://arxiv.org/abs/2402.12207 Why do large electorates tend towards evenly split results?by David Appell , Phys.orghttps://phys.org/news/2024-09-large-electorates-tend-evenly-results.htmlThis is Heliox: Where Evidence Meets EmpathyIndependent, moderated, timely, deep, gentle, clinical, global, and community conversations about things that matter.  Breathe Easy, we go deep and lightly surface the big ideas. Support the showDisclosure: This podcast uses AI-generated synthetic voices for a material portion of the audio content, in line with Apple Podcasts guidelines. We make rigorous science accessible, accurate, and unforgettable.Produced by Michelle Bruecker and Scott Bleackley, it features reviews of emerging research and ideas from leading thinkers, curated under our creative direction with AI assistance for voice, imagery, and composition. Systemic voices and illustrative images of people are representative tools, not depictions of specific individuals.We dive deep into peer-reviewed research, pre-prints, and major scientific works—then bring them to life through the stories of the researchers themselves. Complex ideas become clear. Obscure discoveries become conversation starters. And you walk away understanding not just what scientists discovered, but why it matters and how they got there.Independent, moderated, timely, deep, gentle, clinical, global, and community conversations about things that matter.  Breathe Easy, we go deep and lightly surface the big ideas.Spoken word, short and sweet, with rhythm and a catchy beat.http://tinyurl.com/stonefolksongs