Introduction
American politicians say the way they elect their president is one of the most open and democratic processes in the world. But to outsiders it can also be one of the most baffling.
The election race in some countries takes just a few weeks, but US presidential candidates undergo a political marathon, negotiating primaries, party conventions and an electoral college system along the way.
Find out about the key stages in the presidential election by following our player around the baseball diamond.
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