Hi guys, I'm the author of this theory:
http://www.whoisredjohn.com/See-a-theory-Red-John/3981
I was happy to see that my theory was so popular it actually got to be #1 of the month, with 97 positive.

Now, today I wanted to write a brief about the other suspects in the list, instead of telling you why it has
to be brett partridge, i will analyze the other suspects instead, are you still reading this? great!

Bob Kirkland
Well guys, Bob Kirkland can NOT be red john.
People say "well any of them can be rj because they are in the list" - don't forget that we know
details PJ doesn't know (yet).
+ Connections in the higher league.
+ Correct Age, Hair style, Height (below 6").
- Jason Lennon told Bob Kirkland that he doesn't recognize him, tho he knows and works for RJ.
- Bob Kirkland killed Jason Lennon which was the only way to reach to RJ.
- When Bob Kirkland killed Jason Lennon he didn't leave the RJ classic smiley face.

Bret Stilles
A very manipluative guy, is the head of 'visuallize', and killed before, has a lot of money.
+ Connections and money.
+ Mentalist, just like PJ (or maybe even better, no one knows).
+ Correct Height (below 6").
+ Head of visuallize.
- Needed the help of PJ in order to catch the guy who tried to destroy him.
- Wrong Age, Hair Style.
- Doesn't hate PJ (for as much as we know, he even helped him).

Brett Partridge
My prime suspect, i believe he's the guy based on my RJ theory.
He proves to be very evil, cold and a potential serial killer, and he matches RJ's profile by Rosalind
Harker.
+ Correct Height (below 6"), Age (47 according to Wikipedia), Voice (sounds very similar to RJ).
+ Resent to PJ, laugh and tease his "mentalist" power, and tell him he's doing the real job here.
+ Talks and behaves as a potential serial killer, calling dead people "human candles".
+ Possible connections from his job, with the help of other friends like Bob Kirkland/Bret Stilles.
+ Talks spanish, and have people talking spanish, just like RJ.
+ The "tyger tyger" RJ said, by William Blake, also has the poem which is called "Bless of Partridge".
+ Read William Blake's poetry, just like RJ.
+ PJ said he gets wierd feelings from Brett Partridge, saying Brett Partridge is a 'Ghoul'.
- Unknown money status, doesn't seem to work in a very rewarding (money) job.
- Always thinks that RJ made the fake RJ killings.

Gale Bertram
Sounds like a classic RJ, but he doesn't fit in the profile.
+ Suspicious behavior, near to Bob Kirkland and saying to him "She knows more than she tell..".
+ Money (unsure if he has a lot of it) and Connections.
+ read William Blake's poetry, just like RJ.
+ Appriciates PJ, always cautios about him like asking Lisbon questions about PJ.
+ PJ said he gets wierd feelings from Gale Bertram, that something with him is wrong.
- Got Tricked by PJ.
- Possibly wrong Age, Height (above 6").

Ray Haffner
He's Alegant, has money and is a member in 'visuallize'.
+ member in 'visuallize'.
+ Age, Hair Style.
+ Money and Connections.
- Height (above 6").
- Got tricked by PJ.

Reede Smith
Just a suspicious character, a great conspiracy suspect guy.
+ Anagram "Reede Smith" -> "Red Is Me".
+ Age, Hair Style.
- Height (above 6").
- Body weight.
- Got tricked by PJ.
- Not enough appearances in the show.

Thomas McAllister
OMG come'on, him?! if it's him than bruno heller is crazy, a very good suspects for guys who love
conspiracy.
- Wrong Age, Hair Style, Height (above 6").
- Not enough appearances in the show.
- Got tricked very easily by Lisbon's team with the help of PJ.

Brett Partridge likes to call Jane on his decisions to many Red John cases, and is present at quite a number. He works at the CBI so he has at least a close connection to Jane and Lisbon and the team. In the video he fights Jane on the what's clever and what isn't, and Brett likes to fight Jane's decision on things.

His name is Brett which is a similar (allbeit differently spelt) name to Bret Styles, who one can guess is Red John's father. Bret Styles and Jane get on too well for it to be him, but there's a strong connection between Styles and Red John. Similarly, this is the case with Bertram. I've no doubt that every single person on Jane's suspect list is either a FRIEND OF or Disciple of Red John, but alas only one of them is actually Red John...

Bob Kirkland has taken a vested interest in Jane's investigation, which suggests friend or disciple of Red John but I doubt Red John himself would care as much as that.

Ray Haffner, again, probably knows of Red John through Visualize, but doesn't actually have to skills to do anything. Jane plays him effectively in that one episode, and his reveal as Red John would be boring... Although he does ask Cho if he thinks Jane is smarter than him, but that's such a weak link...

Reede Smith is a boring nobody, and I think his reveal as Red John would be even crapper than Ray. At the end of the day, he's just an FBI agent who clashed with CBI when jurisdiction came up, not exactly fun.

Thomas McAllister, is a creepy perv, but that doesn't mean he's Red John. I mean, he was in one episode, and all he did was try to rape Van Pelt. If he WAS Red John, he'd have known VP was CBI and wouldn't have tried anything. RJ has been watching Jane for a long time, he's not going to get fooled by that cheap trick. Plus if his obsession with outsmarting Jane was so strong, he'd like to do it a lot more.

So my conclusion is Brett Partridge as he's the only real character Jane legitimately doesn't get on with, and is - as Jane will tell you - a ghoul. Plus, he has a freaky voice, which kinda sounds Red John-y from the season 4 finale.

Although chances are it's none of them :) I hope we find out who, but don't catch him... They can't catch Red John, they finish the show.

Just wondered if anyone else really looked at the photo of Allan Charney? I see a strong resemblance to Bob Kirkland, lazy eye and all.  It was stated that Charney had family. Perhaps Charney somehow survived (and the body is someone else) or perhaps a brother of Charney is out to get Red John himself.  

Just saw this press release today (posted on the 29th)

http://www.cbs.com/shows/the_mentalist/news/1001022/

Interesting that CBS claims that red johns identity will be revealed by the end of 2013. Either suggesting that we will know who red john is before the season finale, or this season is significantly shorter.

http://www.cbs.com/shows/the_mentalist/news/1001022/ Finally!At the end of the year we will know who Red John is!