@palmerreport For the US and UK I use #USPolitics and #UKPolitics. I don't know about other countries; maybe other people can suggest something.
For US states I suggest a variation on the Twitter convention using the Mastodon capitalization convention (for screen readers), e.g. #GAPol, #AKPol, #DCPol, etc.
#uspolitics #ukpolitics #gapol #AKpol #DCpol