The paper aims to analyze the political of representation in Slovakia and Czech Republic from the gender perspective. To do so, it is taking into account the context and specifics of different political parties and their inner organization. This means that the research aspires to assess the “openness” of particular political parties based on the different processes of selection and approval of candidates and making their success more likely based on their placing on “electable” spots on the party list. The comparative study is possible as the multiparty political system with closed party list (although with option to cast a preferential vote) is present in both of these, once in the federation functioning, post-communist countries. This also leads to an interesting opportunity to compare the “sibling” political parties from Slovakia and Czech Republic to see, whether a party ideology in this region plays role in the women representation in parliaments. The strongest part of this paper is that it works with original and very specific data about the inner organization of political parties and their nomination processes. This is mainly because of fact, that the dataset, the paper work with, actually consists from data aggregated from various research projects (diploma theses, course papers research, own research of faculties, etc.) done at Comenius University in Bratislava. This crowdsourcing-style data gathering allowed us to collect original data, which would be otherwise very difficult to collect by only one individual, either because of the time consuming nature of this process, or problematic nature of obtaining outdated official party documents.