Political Science

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What are the reasons why the United States has evolved a stable, centrist, two-party system?

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There are two main reasons for this.

One reason has to do with the rules of the American electoral system.  In our system, we have a “winner-take-all” approach to elections for legislative seats.  Whoever wins the most votes gets all of the representation in that district.  A party can win 45 or even 49% of the vote in a certain district and not be represented at all.  This is in contrast to some...

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