Keegan Allen about AD: “Everyone will freak out because it’s so clearly in every episode,” he adds, laughing. “When it’s finally revealed, you could literally go back to season 1 and knowing who it is, you can be like, ‘Oh, wow. Whoa. This has been here all along, and I never noticed it,’ which is, I think, brilliant.”

P.S. That's why the choices are from characters appearing since season 1!

Oh boy, my theories about AD's identity change every few days, how ever right now it's going strong that it's Melissa... I will tell you why..

She had been shady since day one.. she's been proven to be a compulsive liar on several occasions. (Let's not forget she was also one of the "Queen of Hearts" on the Halloween Train.) Her family also hates Alison's (which I don't understand considering Peter slept with both Mary and Jessica which makes Melissa and Spencer Alison's cousins... at least Spencer anyways) Jessica also said "Never turn your back on a Hastings. Seems like they could be a bigger threat? Melissa also killed Bethany. (I'll argue with anyone on this.. yes Mona hit Bethany but she was still alive when Melissa buried her) Melissa has always claimed she did this to protect Spencer "SINCE THE BEGINNING" that could be a massive clue to her being AD.
There was also that scene when AD handed Jenna the book. She has the same hair style as Torrey DeVitto. (Who does play Melissa)

SIDENOTE: I am also having a lot of mixed feelings about Lucas. He does have a ton of motive, but AD also tortured Hanna. I have a hard time believing he would hurt her if he cares about her as much as he claims.. unless that's all been a lie.

I agree^^
I had always been suspicious of Melissa and Lucas, but after Lucas' story with the comics, I don't think it's him anymore.. Maybe Wren is helping Melissa!
Also, the theory of Spencer's twin seems very convincing, but I don't think it applies to Keegan Allen's answer above.. If she was pretending to be Spencer since season 1, they would have found it out by now..

I think it's Jenna because she is the one who has had the most grudge against the Liars, especially Alison, and the others since they just stood there and watched her blind her without saying anything to anyone.

I don't even fucking know anymore. I just chose at random, because that's exactly what this idiotic show is.
At this point, it's practically impossible to figure out who AD is.

I think it's Jenna because she is the one who has had the most grudge against the Liars, especially Alison, and the others since they just stood there and watched her blind her without saying anything to anyone.

It CAN'T be Jenna. AD took her from the former school and she said "you're AD?" But who knows anymore with this show. Who knows if it's even Melissa. But she does fit the criteria.

How is Jenna winning this poll? Did people not SEE her TALKING TO AD? Or being DRAGGED OUT BY AD?

I can't with this site anymore. The stupidness is astounding.