The implied probability of an "In" vote on June 23 fell after an opinion poll by ORB for The Independent newspaper showed the "Leave" camp was 10 points ahead of "Remain".
Brexit 'disastrous' for EU global role: analysts
As recently as last Thursday, betting odds indicated a 78 percent probability of an In vote, according to Betfair odds.
While betting odds have consistently indicated an In victory, opinion pollsters have so far painted contradictory pictures of how Britons will vote.
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