There are different kinds of posts about politics, e.g.:
* Discussions of issues (reproductive rights, international relations, tax policy, local urban planning, etc.)
* Endorsements of specific candidates
* "Horse race" updates on polling data
* High level discussion of systems of government
* Commentary *about* discourse on any or all of the above
I'm sure there are others.
Tone can also vary: descriptive vs. prescriptive, general vs. specific, emotional vs. detached, personal vs. impersonal.