You just need to be brutal about pruning. Someone retweets politics twice in a row? Mute retweets from them. Someone posts more politics than things you want to read? Unfollow.
My timeline is maybe 5% US politics. That's still 5% too much, but no more than in any other media. That's 117 people followed, and is about the maximum message volume I want to deal with in any case.
My timeline is maybe 5% US politics. That's still 5% too much, but no more than in any other media. That's 117 people followed, and is about the maximum message volume I want to deal with in any case.