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The trio all have short odds with Paddy Power on being named the victor on August 24, while the other remaining housemates are now considered longshots for the title.
Josie, who has a free pass to the final, is the favourite at 8/13, while Corin can be be backed at 11/4 and Sam is rated at 13/2.
Former favourites Steve (20/1) and John James (33/1) have drifted, while Andrew (25/1), Mario (16/1), Dave (40/1) and JJ (50/1) are not getting much support from punters.
