Sarah Palin on back of motorbike
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Sarah Palin's tour renews presidential bid speculation

Sarah Palin, the former American vice-presidential candidate, has launched a tour of the north-eastern states, increasing speculation that she may run for the Republican presidential nomination next year.

On the first leg of the tour she rode on a motorbike along with thousands of other bikers, as part of Memorial Day in Washington.

Tom Burridge reports.

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