Comedian Brian Conley was the second favourite to win I'm A Celebrity ... Get Me Out Of Here! before leaving the jungle.
Bookmaker William Hill said that odds on Conley - the previous front-runner - had slipped to 9/2.
Eastenders star Charlie Brooks took Conley's place at the top of the table, becoming the 10/3 favourite to be named the new Queen of the Jungle.
Boxer David Haye is third favourite at 11/2, according to the bookmaker.
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A video aimed at persuading "the youth" to vote in the EU referendum appears to have misfired, it was lambasted on Twitter.