Nevada and Arizona, where winning for Democrat candidate Joe Biden may represent the final blow to US President Donald Trump's re-election.

Iran PressAmerica: Nevada and Arizona, where winning for Democrat candidate Joe Biden may represent the final blow to US President Donald Trump's re-election.

Pennsylvania has also become a focus of the final stretch of the election, and a win there for Biden would be enough for 270.

Yet victory in the states still up for grabs is by no means guaranteed, with the latest tallies showing the outcome on a knife-edge amid the Trump campaign pursuing legal action to contest vote counts.

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