Pripyat is a controlled-democracy.
To put it simply, there are three branches of government (Executive, Judicial, Legislative), of which the National Assembly and Judiciary are elected. The Executive Planning Committee is staffed by members of the FAGSCOM (Fully Automated Gay Space Communist) Party, which subsequently is not able to field candidates in elections. A candidate must be endorsed by a party in order to run for office. Both citizens and non-citizen residents are able to vote, however only citizens are allowed to run for office or found parties.
To put it even more simply, we stole Cuba's constitution and made some adaptations to suit our needs.