 They saw prostitution as patriarchal oppression, and therefore, not a free will choice, although there was less unanimity over what should be done.The uniqueness of the proposal was emphasised, all of which took place at an ideological level, with no appeal to empiricism, which was explicitly rejected.Eventually, the bill passed on 4 June 1998, by 181 to 92 in the 349-member Riksdag, becoming law on 1 January 1999.