Wow. I pretty much like (or appreciate) all the characters left in the tournament. Some of these matches are pretty hard!
(1)Tyrion Lannister - Ramsay is an amazing villain and an absolutely despicable human being that you love to hate, but Tyrion is just too good. A pity, but 3rd round for Ramsay is not too shabby.
(4)Petyr Baelish - Goddamn it. This is really hard. I'd take any of the two over all of the other characters in this division save for Tyrion. That said, I think Littlefinger has a bit of an edge. Davos is ludicrously good, believable and sympathetic, but LF is a top 5 character for me, so he edges out the win. Would be fine with Davos winning, though.
(3)Sansa Stark - It pains me to vote against Brynden, but as much as I despise Sansa during the first book, she actually grows quite a bit and is a very decent character in her own right.
(2)Cersei Lannister - Again: Kevan's awesome and I really like him. That said, Cersei is just a fascinating character - amazing mix of stupidity, paranoia and ruthlessness that just works.
Honestly, aside from Tyrion/Ramsay, I would be fine with any of the other six characters winning. Good matches ITT.
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When you have nothing to say, quote yourself ~ Solfadore