While in several States (e.g. Austria, Denmark, the Netherlands, and Norway) limits to private contributions do not exist, they may be imposed to prevent distortion of political competition in favour of wealthy interest and, if necessary, to combat corruption and undue political influence. Such limitations have been shown to be effective in minimising the possibility of corruption or the purchasing of political influence (CDL-AD(2010)024, para 175). Thus, it has to be welcomed that in the majority of CoE member states, there are limits on contributions for legal and/or natural persons to political parties (and candidates). However, the limits on private funding should not be too high to be effective, as OSCE/ODIHR and the Venice Commission make clear in the case of Serbia (CDL-AD(2014)034, para 28).