Idk I live in a place like that I find there are still two broad groups of parties that rarely make coalitions a large distance across the divide. It's not like there is only one axis of politics but there is a sort of broad undercurrent of older/conservative and younger/change broad split.

But speaking to your point, there is no reason at all why a two party system is required to have a rule of thumb that if everyone thinks you're biased you're on the right track...