Governance by indicators and the re-politicisation of expertise

States are measured and ranked on an ever-expanding array of country performance indicators (CPIs). Such indicators are seductive because they provide actionable, accessible, and ostensibly objective information on complex phenomena to time-pressed officials and enable citizens to hold governments to account. At the same time, a sizeable body of research has explored how CPIs entail ‘black boxing’ and depoliticisation of political phenomena. This article advances our understanding of the consequences of governance by indicators by examining how CPIs generate specific forms of politicization that can undermine a given CPI’s authority over time. We contend that CPIs rely upon two different claims to authority that operate in tension with one another: i) the claim to provide expert, objective knowledge and ii) the claim to render the world more transparent and to secure democratic accountability. Analysing CPIs in the field of education, economic governance, and health and development, we theorize and empirically document how this tension leads to three distinct forms of politicisation: scrutiny from experts that politicises the value judgements embodied in a CPI; competition whereby rival CPIs contest the objectivity of knowledge of leading CPIs; and corruption, where gaming of CPIs challenges its claim to securing transparent access to social reality. While the analysis identifies multiple paths to the politicization and undermining of specific CPIs’ authority, the article elaborates why these processes tend to leave intact and even reproduce the legitimacy of CPIs as a governance technology.