If I recall correctly, the Politics tag didn't exist to start with. It was added very recently by Vidme when a group of people flocked over from YouTube specifically to try and abuse Vidme's featured content algorithm to push an agenda. This is the reason why the political section of the website is so one-sided.
The impression I've gotten from Vidme's community is generally apathetic or non-conversational when it comes to politics, because the sudden influx of content was a big problem at the time. It would be nice to see something a little more balanced (and international) develop, but I wouldn't hold out for that.