While it is assumed that the new regimes in Spain, Greece and Portugal are fully liberal democratic, the question of their consolidation remains to be assessed. Although this raises problems about the nature of that process, focusing on the role of political parties provides a crucial means for determining the extent to which democratic consolidation has been achieved so far and for identifying any problems here. This is done by constructing a comparative approach based on three relationships: parties with the state; inter‐party relationships; and, parties with society. In applying this approach to the three cases, it is hypothesised that regime consolidation may well proceed at variable paces at the different levels.