The series two champion is rated at 4/11 with Paddy Power to win the final series of the reality show. Chantelle is currently his closest rival and can be backed at 10/3.
Nikki's odds have been cut significantly and punters can now back her at 8/1. Meanwhile, series five returnee Victor's odds have slipped over the weekend to 25/1.
All the other housemates, Preston (50/1), Ulrika (50/1), 'Nasty' Nick (66/1), Michelle (80/1) and Vanessa (100/1) are currently considered longshot outsiders.
On Wednesday, Nick, Vanessa and Nikki face the public vote ahead of a double eviction.