The Katie Price-lookalike can currently be backed by punters at 5/2 with Paddy Power. She now has shorter odds than both John James and Josie, who are currently rated at 3/1 to win the series.
Corin was previously the favourite for the title in June after she took part in a Tree of Temptation task and became a more prominent figure on the show. Her success in last week's Glee task and the on-off romance between John James and Josie has boosted her chances of landing a spot in the Ultimate Big Brother contest at the end of the summer.
Late entrant Andrew is currently being backed at 6/1, Steve is rated at 10/1 and former-mole Mario can be gambled on at 12/1.
Odds on Ben being triumphant have drifted significantly with the journalist now rated at 14/1 for the win.