The recent regulations in Sweden created the Pirate Party. The even more recent controversies with FRA (massive surveillance legislation) and ipred (strengthening copyright holders rights) and the Pirate Bay trial have driven the new parties marketing for them. Yesterday the party passed the 10 000 member level.
The Pirate Party is now larger than both the established Left Party and the Environmental Party making it the sixth largest party (counted in members) in Sweden. Swedish wikipedia has a table of party members here.
That the implementation of strickter internet regulation would increase the popularity of the Pirate Party should hardly be surprising. It is possible that few politicians in other parties were aware of the amount of popular anger was brewing under the surface and how this was organised and created into a more organised protest movement. In this way the growth of the Pirate Party is definately unintended but not unexpected.