Explainer: Why is there two-party system in US?

A combination of images showing badges labelled 'Republican' and 'Democrat', referring to the two dominant parties in the US. — Canva/Files

The political hemisphere in the United States is shaped by two dominant parties: the Republicans and Democrats, solidifying a two-party system...

source https://www.geo.tv/latest/572020-explainer-why-is-there-two-party-system-in-us