Internet is an important part of the contemporary public sphere. Therefore, we can ask ourselves how it can change the way citizens are involved in the political debate. This article highlights two types of relation between Internet and the political sphere. First, there are political practices, which are extension of classical practices: professional political communication, political protest, or electoral fraud (piracy). New issues and questions arise due to the particularities of Internet, but these practices do not fundamentally change democracy. Secondly, the development of free software shows an attempt to redefine the delegation of political authority. The liquid democracy project, currently promoted by the Pirate Party, combines these reflections with the conception of numeric platforms to create a new form of democracy.