On November 5, millions of Americans will cast their votes for president, with the vast majority deciding between Democrat Kamala Harris or Republican Donald Trump. This historic election, however, is not determined by a singular national poll, but rather a state-by-state contest. Many people outside the US, and some inside, do not understand how this complicated system works.

Here are five things to know about the electoral college system:

The founding fathers opted against a national popular vote where the winning candidate just has to gain a majority of votes to claim victory. They decided instead to establish an electoral college under Article II of the US Constitution.

Under this system, voters in every US state and the District of Columbia decide the outcome of a winner-takes-all contest for their state’s electoral votes. Each state is allocated a set number of electoral votes, in line with the size of its population. For example, Texas, with a population of over 29 million, has 50 electoral votes. North Dakota, on the other hand, has a population of under 800,000 and is apportioned three.

By securing a majority of the vote in a state, a candidate collects its allotted electoral college votes. There are 538 in total, with the winner needing at least 270 to secure the presidency (with their running-mate becoming vice-president).

Maine and Nebraska are the only two exceptions to the winner-takes-all approach. These states also use their congressional districts to allocate some electoral college votes: two go to each state’s overall popular vote winner, while one goes to the popular vote........

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