Editing Barriers to entry (section)

==Barriers to entry in non-economic areas==
For [[political parties]] the [[electoral threshold]] is a barrier to entry to the political competition.<ref>[http://www.jstor.org/stable/1816288 Tullock, Gordon. "Entry barriers in politics." The American Economic Review 55.1/2 (1965): 458-466.]</ref> One dataset with barriers to entry to the political competition by country is the "Barriers to parties" indicator in [[V-Dem Democracy indices]].<ref name="v-dem">[http://dx.doi.org/10.2139/ssrn.3066654 Sigman, Rachel, and Staffan I. Lindberg. "Neopatrimonialism and democracy: An empirical investigation of Africa's political regimes." V-Dem Working Paper 56 (2017).]</ref>