Quorum requirements for a referendum to be valid

Bolivia
- Mandatory referendum - turnout quorum
- Optional referendum - turnout quorum
Law 026 (June 30-2010) on the Electoral Regime [Ley 026 del 30 de junio de 2010 del Régimen Electoral]http://aceproject.org/ero-en/regions/americas/BO/bolivia-ley-del-regimen-electoral-2012
According to Article 21 of the Law 026, to be valid, any referendum requires a majority turnout quorum (50%+1), and that the number of valid votes surpasses the sum of the blank and the null votes.