To all of you morons out there convinced that Partridge is RJ - do you
really think that someone would create a show in which he would allow
you to solve the main mystery by simply comparing voices ?! And not just
that - but to give you only one guy who has a creepy voice, like that
one of RJ ?! Do you really think that there are only a few of you whose
first suspect was Partridge ?! Are you really that stupid ?! Difference
is, we ruled him out because it would be a lame solution to the show
that is totally opposite of lame. However, he is connected to RJ, as are
Bertram, Kristina and GVP.

Further, the writing "He is ma" was
not meant to be he is Mars or Mashburn, but he is many. Those names
would mean nothing to Jane and the CBI since they meet those two way
later. And as the story develops, we find out that RJ has a net of
disciples, helping him in any way possible, including killing. And can't
you initiate your brain cells just a little bit, and use the mirror
when Lisbon is getting nearer to the bathroom to figure out where the
smiley is, and also realize that it is not the first thing you see at
the scene, because you block that left wall when you open the door ?!
And at the end of that episode, when Jane answers the phone, does the
voice on the other side sound anything like RJ's ? Of course not.

Also,
about shaking hands - it doesn't mean you should re-watch all the
episodes and lookout for the hand-shaking scenes. That wasn't supposed
to be taken literally. In Jane's book, there's a name of Dr Morning, a
"dead" guy. Did you see him shaking hands with Jane ? NO ! That means
Jane met him in his pre-CBI days. He also didn't shake hands with BP,
and yet his name is first on the list. Besides us ruling him out because
that would make the writing of the show bad and transparent, we ruled
him out because of his age and all of the other descriptions of RJ which
he doesn't match. But, Jane himself didn't rule him out so that makes
Partridge a legit suspect. And stop mentioning that scene in which Jane
and Kirkland shake hands. It happened recently, meaning they didn't have
enough time to become either friends or enemies after that. He is not RJ.

If it turns out that BP is ... that would make The Mentalist a laughing stock. So it is safe to say that someone else is RJ.

I think that Red John is Gale Bertram because:

-He has shook Jane's hand(3x01)
-He drinks tea(3x24)
-He quotes part of the William Blake poem(3x16)
-He helps to frame Hightower when he informs La Roche that Hightower had a relationship with one of Todd Johnsons victims which shows she has motive
-He hates Jane and was disappointed when Jane didn't go to prison for killing Timothy Carter
-He is quite powerful because he is the CBI director
-When he first meets Jane he calls him boy wonder which is what Jane's father called him and not many people know that.
-Jane said Red John would be at the mall on the season 3 finale and he wouldn't have been talking about someone like Timothy Carter maybe Red John was there which would mean Bertram.
-A lot of Red Johns friends are from the police which is people that Bertram can get to help him
-Bertram led Jane to O'Laughlin by mentioning Rope and O'Laughlin led Jane to Timothy Carter who Jane killed and went to prison for it.All caused by Bertram and to do that he had to know that Jane was setting a trap for the CBI mole because O'Laughlin told RJ and if RJ is Bertram thats how he would have found out.

   We may have been looking at Bertram to be the CBI mole and the whole
   time he could be Red John.
 

People Jane has shook hands with before season 1 up to season 3
BH(Bruno Heller ep)

Before Season 1-
-Virgil Minelli
-Theresa Lisbon
-Judge Dellinger

Season 1-
-Van Pelt(BH)
-Dr Wagner-Jail(BH)
-Preciado 
-Ben Machado-Jail
-Jared Renfrew-Dead(BH)
-A.P Caid
-Heather-Jail
-Victor Marquesa
-Dan Hollenbeck-Dead
-Randall Faulk-Jail(BH)
-Mitch Cavanaugh
-Drake Plaskett(BH)

Season 2-
-Unnamed captain(BH)2x01
-Greg Humphrey(BH)
-David
-Lillian Foster
-Philip Raimey
-Gabe Nyland 
-James Kinsey
-Jon Jon
-Scott Price(BH)
-Vic Bandino-Jail
-Madeleine Hightower
-Olivier Stans
-Cole Sylvan-Dead
-Heather Evans
-Ashley Harrington-Little Girl
-Ellis Hindon
-Andy Burnside
-Kristina Frye

Season 3-
-Gale Bertram(BH)
-Reid Colman(BH)
-Vint Molinari
-Sean Meyers
-Gareth Drucker-Dead
-Yuri Bajorn-Jail
-Walter Mashburn
-Dr Montague
-Dean Puttock-Dead
-Gary O'Donnell
-Kieran Corruthers  

Could Red John be one of these people?