The US is a two party system[0] because it uses first past the post elections. First past the post electoral systems can't support more than two viable parties.
[0] Nominally. In practice, the commonality of ideas between elected Democrats and Republicans, combined with structural advantages that give the GOP a disproportionate hold on power, mean that the US is more of a 1.5 party system.
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The US is a two party system[0] because it uses first past the post elections. First past the post electoral systems can't support more than two viable parties.
[0] Nominally. In practice, the commonality of ideas between elected Democrats and Republicans, combined with structural advantages that give the GOP a disproportionate hold on power, mean that the US is more of a 1.5 party system.