Income Inequality, Governance Quality, and Political Engagement: A Cross-country Analysis of Disparities and Democratic Participation

<ns7:p>Background Income gaps threaten democratic vitality, yet the evidence is mixed on whether economic inequality inevitably suppresses citizens’ political voices. We argue that institutional integrity—particularly the capacity to curb corruption—conditions how inequality translates into civic disengagement. By embedding governance quality in the inequality-participation debate, this study addresses a significant omission in comparative political-economy scholarship and offers policy-relevant insights. Methods We compile a balanced panel of ten democracies—Australia, Germany, Japan, the United Kingdom, the United States, Brazil, India, Indonesia, Mexico, and South Africa—for 2002-2022. Voice and Accountability (Worldwide Governance Indicators) are the outcome variable; predictors include the lagged Gini Index, extreme poverty headcount, GDP-per-capita growth, and five governance metrics. Country- and year-fixed-effects regressions with cluster-robust errors are estimated. Diagnostic tests (Pesaran LM, IPS, Westerlund, VIF) guide specification and interaction terms to assess whether strong corruption control moderates inequality’s impact in developed versus developing subsamples. Results Corruption control is the strongest positive predictor of democratic voice, while inequality and poverty are insignificant in isolation. Interaction models reveal pronounced asymmetries. In developed economies, the deleterious effect of inequality is neutralised—and sometimes reversed—when corruption is tightly controlled (β = +0.028, p < 0.01). In developing economies, inequality remains benign until corruption escalates, at which point higher Gini scores significantly erode Voice and Accountability (β = -0.020, p ≈ 0.07). Corrected models confirm a modest universal adverse effect of inequality once institutional dynamics are constant. Conclusions Inequality is not destiny; its democratic toll depends on whether institutions can control corruption. Policy agendas that redistribute income will underperform if they neglect governance reforms. Combating graft, professionalising public administration, and expanding digital feedback channels can shield civic participation even in unequal societies. Conversely, failing to fortify institutions leaves democracies—especially developing ones—vulnerable to a corrosive feedback loop of widening gaps and falling political voices.</ns7:p>