Career
In the municipal election of 2004, Mäenpää received a total of 2,208 votes, more than any other candidate in Turku. Mäenpää has also appeared as a candidate in elections to the Finnish parliament (Eduskunta) and the European Parliament, but has not been successful. In the European parliamentary election of 2009, Mäenpää publicly supported Ville Itälä of the National Coalition Party (Kokoomus).
In 2010, Mäenpää joined the Finnish Freedom Party, and the SKS was dissolved.