Christine O'Donnell
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Delaware debate pits Christine O'Donnell against Coons

Delaware Republican Senate hopeful Christine O'Donnell has sought to play down past controversial comments as she faced her Democratic rival in a debate.

She and Chris Coons are competing for the former seat of Vice-President Joe Biden in November's mid-term elections.

Ms O'Donnell said remarks she had made about witchcraft, sexual abstinence and evolution were not relevant to the race - a position Mr Coons contested.

She is seen as a rising star of the conservative Tea Party movement.

Go to next video: US reporting of O'Donnell remarks