Jeremy Vine with green map
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Going green: TV tricks of the US election 'situation room'

As the results flood in from the US presidential election, all eyes will be on the key battleground states which must be decided between Barack Obama or Mitt Romney.

Ahead of the vote, the BBC's Jeremy Vine shows how the 'White House situation room' will be used to illustrate the US election results in graphics.

How to follow the US election on the BBC

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