It must be admitted, however, that both establishing and maintaining accurate voter registers are especially difficult in (post-)conflict situations with a large number of internally displaced persons (IDPs). Nevertheless, the UN Guiding Principles of Internal Displacement (1998) stipulates that IDPs shall not be denied the right to vote (Principle 22). Accordingly, the Committee of Ministers recommended that CoE member states should take appropriate legal and practical measures to enable IDPs to effectively exercise their right to vote in national, regional or local elections (CM/Rec(2006)6, para 9). While major efforts have been made to allow IDPs to vote in (post-)conflict states, there are still a large number of IDPs who are not included in voter registers, e.g. in Ukraine.