PERTH, SCOTLAND - NOVEMBER 15:  Nicola Sturgeon, wears tartan shoes as she delivers her first key note speech as SNP party leader at the party's annual conference on November 15, 2014 in Perth, Scotland. Nicola Sturgeon formally took over the leadership of the SNP from Alex Salmond yesterday, during her speech she urged voters to leave Labour in next May's UK election.  (Photo by Jeff J Mitchell/Getty Images)