Figure 5. The position of single deputies within communities provides insights on what happens when a party splits up.

In this particular case the PDL party in mid November 2013 splits into two different parties ‘Forza Italia’ and ‘Nuovo Centrodestra’. Interestigly, nodes at the core of the government coalition become core in the opposition one when the split up occurs. This is evidence of political voting being driven by coalitions' affilitions rather than the policy content of each roll call vote.