11. Elections for the IKP are based on a closed party-list proportional representation system . 12. The factions also decided to keep a proportional representation system for the elections. 13. The semantic network of knowledge representation systems has been studied in various paradigms. 14. A proportional representation system encourages a multitude of political parties than continental Finland. 15. The District Council ( 2nd ) FC returns 5 members by proportional representation system . 16. The 40 members of the Legislative Council were elected under a proportional representation system . 17. Voting is carried out using a mixed-member proportional representation system . 18. The list voting system is adopted under the rules implementing the proportional representation system . 19. He blamed the proportional representation system for nearly creating a conflict within the party. 20. The draft constitution provides for election of members of parliament a proportional representation system .