From 1994 to 2003 Tiny was general secretary of the SP. He was chair of the SP group on Tilburg council from 1982 to 1999. Tiny is a member of the Parliamentary Assembly of the Council of Europe in Strasbourg, and has been chair of the United Left Group in the Assembly since 2007. He is also a member of the Presidential Commission of the Council of Europe.
“If you want to make the Netherlands more social and the world safer, the SP is your ally.”
In the Senate Tiny is responsible for foreign affairs, defence and European affairs and participates in meetings of group chairs.