So, I watched S02E08 again and probably I found something. Two cops are taking Rebecca, Bosco's team's secretary, away, after Jane interrogated her. Rebecca sees another agent coming, and she smiles. She smiles because she has recognized him. He's her "true love", the only one helped her with her dark past. He's, in fact, Red John. She thinks he's here to save her, but he kills her.
The interesting thing is that we see RJ walking, and for a moment, few frames, we see his hair from behind. Unless he's wearing a wig, he has brown hair. This excludes many RJ suspects from the list.

Now, the actor who is going to be RJ never played him before, but I don't think Bruno would show us a brown-haired man when the real Red John doesn't even have hair, or it's white (Bertram and Stiles). We don't know if Haffner dyed his hair, but it's a possiblity. Furthermore, RJ in S02E08 can't be Mcallister because his hair is completely different (but we must remember the wig possibilty).
Again, it's clearly not Smith, because Smith is too fat, and we see that RJ isn't when he's walking.
Then we have Kirkland and Partridge left. Kirkland has brown hair, and we saw he's definitely dead.
We can't say the same thing of Partridge (If only Lisbon shooted him on the knee we would be sure that he's gone).

All in all, if it's not Partridge, one of the Kirklands or Haffner, they made a huge mistake.
I choose Partridge because he has always intrigued me. Feel free to comment and criticize me.

P.S. Apologies for my badEnglish

To be honest I'm so annoyed/gutted that the red john story won't last the whole season! :@

I have made it very clear that I think RJ is Partridge and don't want to repeat my theories as to why. This post is for the one's who don't think it's Partridge. I want to hear real theories as to why Heller said that it was important that Partridge was the first one to die. He said that the reason would be explained later on and there is only 2 episodes left to explain it.

So let's assume you all are right and Partridge really is dead. Why was it so important for him to die first? I would love to hear a legitimate theory that I can find plausible. Come on. Prove to me that he is dead and why.

And I don't want to hear that there were too many people at the scene for him to have faked it. We are assuming that he is in fact, dead. I want to know why RJ felt it was important for him to go first.

IT'S TIME TO VOTE. AGAIN!

Ray Haffner - Green ' Plausible ' 
Brett Partridge - Red ' Unlikely '

Yesterday's Results :

Brett Partridge - 47
Sherrif Thomas McAllister - 44

If partridge is not RJ, I hope they give some reasonable explanation of his death and that reason should be worth to be delayed till 7th or 8th episode....

Bruno Heller pretty much says Brett Partridge is Red John. 

"After the first few episodes which are very much about the 7 suspects, it's all blue sky." - B. Heller

1st episode - Partridge's demise. It was MEANT to be obvious Partridge is Red John. Its not a cheesy trick, Red John HAD to kill Partridge. For everyone saying it's bad writing, you were the ones dumb enough to think it was intended to fool you. By that point, you were supposed to know Brett Partridge is Red John.

2nd episode- 3 guys meeting. Woman with pigeons sent by Partridge to scout and see if Jane knows his identity.

3rd episode- Sherriff McAllister saves Patrick. Patrick realises Gale and McAllister are good.

4th episode- Bob Kirkland ruled out. He's hunting RJ. Reede shoots Michael Kirkland so he's good. 

After all that it's just Red John playing into Patrick's hands. Patrick has outmaneuvred RJ, capitalising on his own bluff, using RJ's "pawns," who aren't really his pawns (3 in meeting), against him. 

"There are tricks but they're not there to fool the audience. There's no 11th hour twist" - B. Heller. Hence, we already know.

Brett Partridge being Red John would be the most unoriginal *twist* the series has ever endured. It would make an otherwise well done show laughable. I enjoy every other suspect including Reede Smith over Partridge as Red John. Even the completely farfetched Kirkland twin theories are more entertaining. Just let it be any answer other than Partridge. What a waste of everyone's time if he's RJ.  I'm rooting for Bertram.