Probably the last update of the series, and perhaps the last ever... 
Latest Betting Odds (To Win) - 3/11/18:
[Courtesy of BetFred]
Cameron 8/13;
Cian 11/4;
Akeem 6/1;
Zoe 12/1
Looking at the other bookies, these odds represent best value for Cameron and Akeem: Cameron's as low as 1/2 (I.e. 2/1 on) with one bookie, while Akeem's 9/2 with most of the others.
Zoe is at 20/1 with most other bookies, and looks likely to finish 4th.
It's difficult to tie these odds with the online polls. There's been a lot of support for Cian on the Tellymix poll, and that's probably responsible for his odds shortening. However the Tellymix poll has Cian on nearly 45% of the entire vote! 
Cameron's second on that at about 21% while Akeem and Zoe are very close at just under 17% each.
It's perhaps worth bearing in mind that although the Tellymix poll represents a large number of votes (over 4000 at the moment), it's open to everyone and - despite what some claim - it's really quite easy to vote in it multiple times. 
The DS poll represents a lot fewer votes, but you have to be a member to vote and therefore multiple voting's pretty-much impossible. Cian's currently top of that too, but it's much closer with Akeem 2nd and Cameron further back in 3rd.