Jockey Carol Batley, representing the "No" vote, (R) and jockey Rachael Grant, representing the "Yes" vote, prepare to take part in a 'Referendum Race' sponsored by the bookmakers Ladbrokes at Musselburgh racecourse in Edinburgh, Scotland, on September 15, 2014, ahead of the referendum on Scotland's independence. British Prime Minister David Cameron on Monday was to plead with Scots to vote against independence in a referendum as Scotland enters the most decisive week in its modern history. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
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