Joe Biden and Paul Ryan
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Ryan teases Biden over '47%' remark

12 October 2012 Last updated at 04:44 BST

Republican Paul Ryan suggested Mitt Romney's criticism of the 47% of Americans who paid no income tax was a Joe Biden-style gaffe.

At the vice-presidential debate in Kentucky, Vice-President Biden, known for the occasional blunder during giving speeches, countered by saying: "I always say what I mean. And so does Mitt Romney."