All groups are a representation of their extremes, as coded by Cliff, so to please the middle income in their entirety, extreme steps are required, such as ending the income tax (some would say that this is not extreme). This is balanced by say, a middle incomer being a socialist as well, or anything else for that matter (liberal religious). There is of course room for balancing here and more diversity such as a social capitalist (socialism + capitalism) or a progressive/liberal conservative (liberal + conservative). The assumption here is that extremes combined together will balance the whole through aggregation, this might be true, and it is through common-sense seemingly true, whether in real life it holds up in all scenarios is currently unknown for me. You can also see the posts on here: Religious Too Racist/Ethno-nationalist? Middle Class Too Prickly? - Democracy 4 - Positech Games and here: What is up with the Middle-Earners inputs? - Democracy 4 - Positech Games.