The bookies have slashed Darren's odds following a run of bets which has seen him rise from 20/1 no hoper to 2/1 leader, according to the latest figures from Ladbrokes.
Darren has certainly been tugging at viewer's heartstrings recently, which could explain his sudden surge in popularity. The singer shared an emotional reconciliation with former EastEnders star and close friend within the house, John Partridge, who chose him in the face-to-face nomination.
Honesty is always the best policy when it comes to winning over the at home audience, and Darren has willingly opened up about his past struggles with drugs. Oh, and he's also stayed out of the constant dramas as much as possible, too.
All this has put previous favourite Scott Timlin into second place with odds of 2/1, followed by Gemma Collins at 5/1. Earlier this week, Gemma looked like the strongest contender to see off Scott - proving just how fast public perception can change.
Alex Donohue of Ladbrokes said: "Darren is all the rage and Big Brother fans are convinced it will be his day this series. Early front runner Scott is falling by the wayside rapidly as Gemma hangs on in there."
There's no telling what will happen within the next few days however, especially after the latest bout of drama, which saw Ex On The Beach's Megan McKenna have what can only be described as a full on meltdown!
Megan launched a furious rant against fellow housemate John Partrige which stemmed from a discussion about cleaning the house, then turned on Tiffany Pollard before security stepped in and the reality star was issued with a formal warning.
Will Megan's outrageous behaviour see her slump down the rankings? Or will viewers embrace her diva attitude and support her feisty housemate? After all, no-one watches CBB for an easy ride.
Here are the current odds:
Darren Day 2/1
Scott Timlin 3/1
Gemma Collins 5/1
David Gest 6/1
Tiffany Pollard 2/1
Daniella Westbrook 20/1
Christopher Maloney 20/1
John Partridge 25/1
Megan McKenna 33/1
Jeremy McConnell 40/1
Steph Davis 66/1
Kristina Rihanoff 66/1
Nancy Dell'Olio 100/1
Angie Bowie 100/1
Is Darren your favourite to win?
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!