MaximusK
Warlord
In true Civilization fashion, the choice of government dictates how players will go about spreading their ideas. For example, democratic players will benefit greatly from building radio towersvoices of freedomacross the land. A Communist states citizens may hear these messages and slowly grow unsatisfied with their working conditions. Likewise, if you chose Communism and have managed to keep the workers happy, citizens of a capitalistic nation who are feeling powerless might convert.
Read more: Civilization V: Brave New World interview
http://www.nypost.com/p/blogs/gamereport/civilization_brave_new_world_sZhj5uO9GQNRqOKvkfpnpL#ixzz2PSCbRscD
Really not much new information in this brief interview but seems that ideologies will have quite the impact.