Ed Note: the results will be approximately 11pm PST thursday night.
Betfair says £40.5 million has so far been chanced on the result of the referendum to make it the biggest political betting event in British history.
Bookmakers said the frenzy of excitement over the looming vote has prompted some people to place bets for the first time. Which means it may be of more than passing significance that bookies are now saying they are very confident of a Remain vote and may even make the In camp still stronger favourites in the final run-up to the vote.
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