Various people have suggested that Louis won because the women were voting for him. Well, that may be so, but I am a straight bloke and I voted for him!
Others have complained that it is mainly men that have won - well again that may be so. But someone quoted (I am not sure if this is 100% true) that men have won 6 of the 10. Try flipping a coin 10 times and then repeat the exercise frequently (if you need to get a life that is). The result will be 6 heads to 4 tails quite often. So 6 wins for men is hardly that out of the ordinary.
Basically the wife and I voted like this: in the first show the wife thought, like the judges, that Dani's performance was not up to the standard of the other three - so she voted once for all the other three. I thought the same thing largely, except that I thought Kimberley's show dance was pretty weak - whereas Denise delivered a good, standard one and Louis did something fairly special - so I voted for just Louis and Denise.
When it came to the final show, it was between Denise and Louis for me - and, frankly I did not agree with the judges that Denise's Charleston was the best we'd ever seen. The wife also voted for Louis - though she didn't say why.
For the series overall, Denise got the most marks from the judges - which I agree with and, if it was voting on that basis I'd have voted for her. Kimberley might have got my vote if was on the basis of the sexiest - but not all blokes vote with their whatsits!
Nick