Vanessa is the bookies favourite to be evicted from the Big Brother house on Friday.
Her odds have shortened from 1/3 to 2/7 Dan's odds have drifted out to 5/2 from 9/4.
Ladbrokes spokesman Warren Lush said: "Money suggests this is not a contest, punters think Vanessa is certain to go. If the one-way traffic for her continues we may have to close the book early otherwise we would be just giving money away."
Meanwhile Emma and Marco are the most popular housemates according to the bookies.
Emma is 5/1 favourite from 6/1, while Marco is 7/1 from 10/1.
Ahmed's popularity is still low with odds on him winning the competition at 66/1.
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Ananova