Barack Obama and Mitt Romney
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US election: Presidential debate build up

3 October 2012 Last updated at 07:21 BST

The American presidential race is reaching its final stages, with just over a month to go.

Barack Obama and his Republican challenger Mitt Romney will face off in their first televised presidential debate.

They will both be hoping to sway undecided voters in the key battleground states.

Alastair Leithead reports from Nevada.