Joe Biden is leading Donald Trump in the national polls for the presidential election slated for Tuesday.
But that doesn’t guarantee the Democratic candidate victory. Hillary Clinton also had a clear lead over Trump in the polls for almost the entire 2016 campaign. She ended up losing in the electoral college.
Because the presidential voting system assigns each state a number of electoral college votes, which go to the state’s victor regardless of the margin of victory (with the exception of Nebraska and Maine), a handful of swing states will probably decide the election and be targeted heavily by campaigners.
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