This study is based on small-N comparative method and historical approach of actual cases to assess whether Third Wave democracies Brazil and Turkey meet Dahl’s set of conditions favourable to the growth, solidification, and constancy of polyarchy. Various endogenous and exogenous factors, institutions as well as social actors’ perceptions toward them, are analysed. Generalisations are made based upon factors that have been an impediment or a facilitator to a democratic outcome. It is shown that moderate GDP per capita growth and demos expansion are twin processes that are a consequence and at the same time strengthen the conditions propitious to polyarchy development and consolidation.