Proposal to add Type "Political Party"

The "Organization" type has already several subtypes listed. However Political Party is missing and from a social science (polticial science) perspective Political Parties are distinct from [GovernmentOrganization](https://schema.org/GovernmentOrganization), 
[NGO](https://schema.org/NGO), or [WorkersUnion](https://schema.org/WorkersUnion).

Would it be possible to add this new subtype?