Boy, there are a lot of clues that could easily be interpreted to point to one person! One reason why I've seldom been able to spot the real Mole clues.
For the women, I think Victoria, Kristen and Nicole are the best candidates to be the Mole. Victoria has the green thumbprint on her helmet in the first challenge -- and we saw it. Also, she's somewhat under the radar. The problem is that three of the previous Moles were women! Kristen doesn't have the green thumbprint on her helmet but she's definitely under the radar, but she too is a woman in a game where three of the previous Moles were women.
The same problem goes for Nicole, but she has an added problem: she's not under-the-radar. In fact, she seems like the resident "bitch." I'd probably exclude her from Mole consideration -- except for clues like "Mom" which might point to Nicole as she's an OB-GYN and the possible clue about her being from Chicago (and the "NIC" before the "IT" bit).
For the guys, I think Craig and Paul are the best candidates to be the Mole, with Clay an outside shot. These guys are men and could thus be chosen to balance out the ratio of male/female Moles. However, Clay is a lawyer and we had a lawyer (actually a law student) as the Mole. Paul could certainly be the Mole -- he's expected to go far and one of his previous coalition partners was executed. The problem is that the same thing happened to Darwin in Season 2 -- and he wasn't the Mole! And finally, there's Craig. I think he's our best male candidate to be the Mole. He's so funny that nobody would probably suspect him -- and he's out-of-shape enough that most people would write off any sabotage as "Oh, he's out-of-shape." And I think he too goes pretty far.
The others I don't think are really the Mole. Although that clue I saw about Mark is interesting, he seems more like a Corbin Bernsen-type of player, and that type is never the Mole. And there's the "LVN" clue that might point to Liz, but we already had an older contestant be the Mole -- Bill, and Liz is a woman as well. So who is the Mole? At this point, although I definitely can predict who is not the Mole and I have some good candidates for who is the Mole, I just don't know who really is the Mole.