Does anybody know how the voting is going to work for the final four HM's? Will it be as last year, with the public voting for a straight winner, and the one with the least votes gets evicted, or are they going for more evictions until the final two?

I think that the way they do that will have a huge effect on who wins. Here are the scenarios as I see them...

Voting for the winner, as based on strength of support by the public.
4th Jade
3rd Kate
2nd Johnny
1st Alex, by a narrow margin.

Voting via eviction, as based on strength of dislike by the public.

1st eviction: Jade
2nd eviction: A voting war breaks out between Alex and Johnny fans, largest vote ever, biggest payday for C4. Result too close to predict.

This will then leave Kate and either Johnny or Alex. Kate will then get votes from her owns fans PLUS all the fans of the evicted housemate wanting to "avenge" their loss.

Result: Kate wins.

Please note that this is not meant to be a statement of support for any housemate, just a (hopefully) unbiased assessment of the situation. So if anyone wants to post any vitriol or propaganda, take it elsewhere

According to a TV Guide summary, There will be an hour long eviction show at 8.30 on the Friday where 2 HM's will be evicted, with the winner being decided in the 10pm show.