Many countries adopted mixed-member (MM) electoral systems in the 1990s, but several switched to list proportional representation (PR) recently. Most switchers are post-communist countries that used the semi-proportional mixed-member majoritarian (MMM) system, often associated with dominant parties. List PR was adopted under competitive conditions in some cases (Albania, Bulgaria, Croatia, Macedonia, Ukraine), while in places where authoritarian control remains (Russia, Kazakhstan, Kyrgyzstan), list PR appears to be used as a means of reducing competition and undermining multiparty democracy
