@Siphonay It's not quite that... since there are exactly two parties enshrined in our system, everyone has to sort themselves into one or the other. Third parties don't have the institutional power to interrupt the two-pole system (except sometimes in local politics). To participate you're essentially forced to pick one. Liberal/Green/Left/Pro-diversity tend to congregate and Conservative/Religious/Right/Business do too. Right now you see a lot of internal divisions in both parties!