Note: I am mostly thinking about Europe and North America and I would like to hear about studies/articles concerning any of these states
In the last years, EU have faced several cases of countries with judicial independence issues and I am wondering if there is a connection between party in power ideology and judicial independence/rule of law issues.
Poland: Main party in power is Law and Justice whose ideology includes Polish nationalism, National conservatism and economic nationalism.
According to this article "there is a clear risk of a serious breach of the rule of law in Poland."
Hungary: Fidesz is the party in power whose ideology includes Hungarian nationalism, National conservatism and economic nationalism.
Judicial independence seems to suffer in Hungary according to this source:
the purpose of the modification is to fast-track judicial appointments for individuals close to the government — even if they have no experience with the judiciary
Romania: According to this article, Romania also has serious issues to ensure judicial independence:
The European Union on Wednesday urged the Romanian parliament to reconsider recent judicial reforms, which critics say weaken judicial independence.
The main party in power are Social-Democrats who have a significant nationalist/conservatism part within their ideology (or at least their political actions show this):
The Social Democrats may be a part of the European Socialists, but on identity politics (especially on nationalism, LGBT, migration and church-state relations) they have been solidly conservatism, catering to the country’s prevailing authoritarian social values.
Question: Is there a correlation between nationalism/conservatism and (the tendency of) lack of judicial independence / rule of law issues?