I believe that NONE OF THE FIVE REMAINING SUSPECTS ARE RED JOHN, but are however, AIDING RED JOHN. Partridge was in fact aiding Red John, because he said the code words Tyger, Tyger. Which, if you remember, was in a poem recited to Jane earlier in the series. Also, keeping in mind that Reede is a part of the society that uses Tyger, Tyger as its code words, we can also assume that the three that jane walked in on in a meeting (Sharif McAllister, Gale Bertram, and Reede Smith) are part of that conspiracy, however i dont believe that onyone on the list is in fact Red John but lets think back a bit.
What is the one character whose status is unknown? Alex Jane; Patrick Jane's father. He would want to hurt Jane and his family, becaus Jane ran off away from the Carney life with his to-be wife, Angela. Perhaps it is possible that his father is Red John and just decided to get revenge at Jane, but if not Jane's father, i would say that the evidence found at the end of episode one of season six yeilds something else. It is possible that Teresa Libson only survived the encounter with Red John because he hesitiated and did not want to hurt her. Maybe it is someone who Lisbon knows and someon who doesnt want to hurt lisbon. This may lead Red John to be Ray Haffner because he seemed to take a liking to her early on when he offered her that job with the FBI. Another thought; maybe it's Sam Boscow, which is the most unlikely one, because he died in a Red John affiliated shooting in season 2; but wouldnt that be perfect? To exile yourself from the investigation by staging your own death? Food For though.

The main points to look out for is this:

-Tyger, Tyger is the code to get into the conspiracy group.
-Reede is part of the group.
-Reede was at the meeting jane walked in on where McAllister and Gale both were.
-Red John hesitated to kill Lisbon
-It is very likely Red John isn't one of the people on the list.
-Red John is very smart, probably ex-Psychic like Jane.
-Red John Killed An early memory of Jane's, possibly meaning that it must be someone that was that early back.
-Red John visited Jane's Therapist, and maybe presented misinformation.
-Lorelie Commented that she doesnt understand why Jane and Red John didnt become life long friends when they met.

I leave you with these observations i have made, even i am peicing together things. But in all i most firmly believe that Alex Jane may be someone to keep in mind when the end of this all comes in, because im saying he is very likely, what with how we havent been hearing about him except for in flashbacks. Also the fact that he is stated to be "A very wicked man". And who is to say Alex Jane wasnt a good psychic like Jane is.