The challenge of distinguishing between abusive and non-abusive constitutional practices – Main ways of detecting abuse: analyses of intent and effects – Obstacles to detecting bad faith intent in constitutional law – Structured and focused analysis of the effects of abusive constitutionalism: introducing the foreseeable effects test – Normative benchmark: substantial diminishment of accountability – Step 1: probability of harm, analysing the tested constitutional measure’s foreseeable effects on operability and autonomy of an accountability mechanism – Step 2: seriousness of potential harm, analysing the constitutional measure’s effects in the broader constitutional context (including interaction effects) – Step 3: harm mitigation, analysing the existence and adequacy of harm-mitigating safeguards accompanying the constitutional measure – Strengths and limits of the foreseeable effects test