In the USA, it seems increasingly like the Republican Party is becoming the "White Party" and becoming a vehicle for soft White nationalism, or at least White grievance politics, while the Democrats are becoming the non-White party and champions of minority rights. Something very similar is happening in England, where the Tories increasingly have a huge share of the White vote and Labour an overwhelming share of the non-White vote (and I mean England, as opposed to the UK - Scotland and Wales are monocultural, White nations, while Northern Ireland of course has its own ethnic - but not racial - based politics). Another obvious example is South Africa, where the Democratic Alliance is basically the "White party", with some outreach to a proportionately small number of liberal-minded Black voters, while a huge plurality of Black voters vote ANC or EFF. I believe there is a similar phenomenon in India with the BJP/Congress cleavage, although I'm no expert.
Some people (particularly those who are sceptical about multiracialism and demographic change) posit that multi or bi-cultural societies inevitably see this coalescing of ethnic identities around parties. Are there examples of multiracial societies which don't have this kind of ethnic-based identity politics? Where parties have genuine appeal across ethnic divides?