As usual, I'm basing this mainly on the latest Betfair odds to win, but have simplified some of the more complicated fractions.
Gina: 3/2
Sam: 5/1
Dan: 11/2
Dexter: 10/1
Sophie: 12/1
Charlie: 15/1
Callum: 16/1
Jack & Joe: 17/1
Hazel: 104/1
Looking at the other bookies: most have Gina at around 5/4 favourite; most have Dexter, Sophie and Charlie much closer together (with the girls generally around 10-12/1); and most have the Twins slightly ahead of Callum.
No doubt there will be major changes after someone is chosen to join Sam and Sophie in the SH, as they'll probably then be the favourite for eviction on Friday.
Observations:
No changes in the positions of the top 3, but Dan's odds have shortened further and he's 9/2 with one bookie.
Despite supposedly losing a lot of support on Facebook and Fan Forums, Dexter's odds have rallied. He's still not in the top group, but he's virtually the only one shortening on Betfair at the moment, and one bookie has him at 7/1.
Sophie's lost touch with the lead group, but the real losers are the Twins and Callum who are becoming the new outside bets with only "No Chance" Hazel below them...