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US prepares for presidential debate

3 October 2012 Last updated at 22:39 BST

Barack Obama and his Republican challenger Mitt Romney are due to engage in the first of three televised debates, ahead of the presidential election.

The first will be held in the battleground state of Colorado, and will focus on the economy and healthcare.

The BBC's North America editor Mark Mardell has been there to gauge support among the growing number of Latino voters.