But its not a 2-party "system". Two parties dominate who is in government, and the names of those parties change over the years. But every US election, there are always lots of candidates, from all walks of life. Bit no one votes for them. There was Ross Perot, but he never really had a chance. British politics are often described as "2 party politics", but again, there are lots of parties you can vote for. Germany has baked in coalition politics, and mostly very stable governments, which have been middle of the ideological road to the point of dullness. Italy, famously, gained a reputation of unstable, shortlived government, due to coalition, essentially in a state of permanent paralysis. In Israel, what seems unusual, very small minority parties seem to have unusual influence on policy, when usually in coalitions, those minority partners find their influence is limited to less important areas. The UK doesn't have much history of coalitions; and generally, people agree, they were needed for the particular circumstances at the time, but you wouldn't want to make a habit of it. The National Government stewarded the country through the Great Depression and WW2, and the Coalition of 2010, which I think was need to get the UK out of a pickle that was not really of its own making. And, I think there should have been a National government during Brexit, because Brexit was not a question that split on party lines. We had an ideological Brexit, rather than a pragmatic Brexit, resulting in a terrible deal.