If it's not clear, this is for the top 20 characters article.
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My list often varies after the top 3, but this is my current one:

#1 Robb Stark
#2 Ned Stark
#3 Arya Stark
#4 Sansa Stark
#5 Jaime Lannister
#6 Tyrion Lannister
#7 Jon Snow
#8 Cersei Lannister
#9 Daenerys Targaryen
#10 Stannis Baratheon

You may alter your list, but only within the next 7 days. After that your changed opinions won't count.

1-Daenerys Targaryen
2-Jaime Lannister
3-Margaery Tyrell
4-Daario Naharis
5-Tyrion Lannister
6-Khal Drogo
7-Jaqen H'gar
8-Cersei Lannister
9-Ned Stark
10-Sandor Clegane

#1 Daenerys Targaryen
#2 Robb Stark
#3 Tyrion Lannister
#4 Catelyn Stark
#5 Margaery Tyrell
#6 Syrio Forel
#7 Jaqen H'ghar
#8 Arya Stark
#9 Olenna Tyrell
#10 Sansa Stark

I'm not sure about the list after #5 but I just tried to make one :D

Ups I had 11 before I just fixed it

Ned Stark
Jon Snow
Tyrion Lannister
Robb Stark
Oberyn Martell
Melisandre
Arya Stark
Jaime Lannister
Cersei Lannister
Sansa Stark

1 - Theon Greyjoy
2 - Asha/Yara Greyjoy
3 - Ygritte
4 - Petyr Baelish
5 - Jaime Lannister
6 - Sandor Clegane
7 - Bronn
8 - Tormund Giantsbane
9 - Osha
10 - Jorah Mormont

1. Tyrion Lannister
2. Sansa Stark
3. Arya Stark
4. Jaime Lannister
5. Ygritte
6. Ramsay Snow
7. Brienne of Tarth
8. Cersei Lannister
9. Theon Greyjoy
10. Osha

1. Tyrion Lannister
2. Sansa Stark
3. Daenerys Targaryen
4. Arya Stark
5. Jon Snow
6. Oberyn Martell
7. Catelyn Stark
8. Margaery Tyrell
9. Olenna Tyrell
10. Ygritte

1. Daenerys Targaryen
2. Tyrion Lannister
3. Arya Stark
4. Jon Snow
5. Robb Stark
6. Margaery Tyrell
7. Ned Stark
8. Sansa Stark
9. Olenna Tyrell
10. Khal Drogo

#1 - Tyrion Lannister
#2 - Margaery Tyrell
#3 - Cersei Lannister
#4 - Arya Stark
#5 - Jaime Lannister
#6 - Tywin Lannister
#7 - Jon Snow
#8 - Olenna Tyrell
#9 - Jorah Mormont
#10 - Drogo

1. Jon Snow
2. Daenerys Targaryen
3. Brienne Tarth
4. Jaime Lannister
5. Margaery Tyrell
6. Daario Naharis
7. Samwell Tarly
8. Loras Tyrell
9. Oberyn Martell
10. Arya Stark

1. Cersei Lannister [tied]
1. Jaime Lannister [tied]
2. Jon Snow
3. Tryion Lannister
4. Oberyn Martell
5. Daenerys Targaryen
6. Arya Stark
7. Sansa Stark
8. Shae
9. Khal Drogo
10. Daario Naharis

1. Sansa Stark
2. Tywin Lannister
3. Cersei Lannister
4. Eddard Stark
5. Oberyn Martell
6. Margaery Tyrell
7. Jaime Lannister
8. Daenerys Targaryen
9. Tyrion Lannister
10. Olenna Tyrell

Well,you asked show-verse,so I had to consider and make some chages. It was really hard,I'm not sure about this.
1.Theon Greyjoy
2.Tyrion Lannister
3.Asha Greyjoy
4.Bran Stark
5.Arya Stark
6.Jon Snow
7..Ygritte
8.Dolorous Edd Tollett
9.Oberyn Martell
10.Samwell Tarly

Since this is show-verse I had to make som changes which I'm not really sure about yet - so many characters deserve to be included but here we go:

1. Daenerys Targaryen.
2. Jaime Lannister.
3. Sansa Stark.
4. Margaery Tyrell.
5. Olenna Tyrell.
6. Tyrion Lannister.
7. Cersei Lannister.
8. Melisandre.
9. Stannis Baratheon.
10. Sandor Clegane.

1. Jaime Lannister
2. Arya Stark
3. Beric Dondarrion
4. Tywin Lannister
5. Asha Greyjoy
6. Brienne of Tarth
7. Varys
8. Melisandre
9. Peter Baelish
10. Thoros of Myr

I know there are some weird characters in my list but well... XD

1. Jaime Lannister *-* (by far !)
2. Arya Stark
3. Brienne of Tarth
4. Olenna Tyrell
5. Tywin Lannister
6. Margaery Tyrell
7. Jaqen H'ghar
8. Tyrion Lannister
9. Beric Dondarrion
10. Sansa Stark

1.Tyrion
2.Sansa
3.Dany
4.Arya
5.Robb
6.Jon
7.Ned
8.Jaime
9.Ygritte
10.Margaery

#1 arya stark
#2 jon snow
#3 tyrion lannister
#4 daenerys targaryen
#5 peter baelish
#6 olenna tyrell
#7 jaqen h'ghar
#8 tywin lannister
#9 robb stark
#10 sansa stark

i guess...

1. Jaime Lannister
2. Sandor Clegane
3. Stannis Baratheon
4. Tywin Lannister
5. Bronn
6. Jorah Mormont
7. Roose Bolton
8. Tyrion Lannister
9. Varys
10. Oberyn Martell

1. Robb Stark
2. Arya Stark
3. Catelyn Stark
4. Jojen Reed
5. Margaery Tyrell
6. Talisa Stark
7. Olenna Tyrell
8. Sansa Stark
9. Renly Baratheon
10. Oberyn Martell

My list have certainly changed after #6

Bran used to be my #8 but after his almost none existence and his appearance in 4x02 he is removed from my list and I didn't use to like Sansa but I really do now! and Olenna and Oberyn have become some of my favourties too :D I wanted to have Tyrion in my list too but there wasn't room for it

I'm not sure after my top 3...

1. Jaime Lannister
2. Arya Stark
3. Jorah Mormont
4. Asha Greyjoy
5. Balon Greyjoy
6. Brienne of Tarth
7. Tywin Lannister
8. Jojen Reed
9. Meera Reed
10. Oberyn Martell

1. Jojen Reed
2. Bran Stark
3. Meera Reed
4. Hodor
5. Osha
6. Brienne
7. Margaery Tyrell
8. Jon Snow
9. Arya Stark
10. Tyrion Lannister (tied)
10. Talisa Maegyr (tied)

I am only really sure about my top 5...

@LoyalJojen - I doubt you are allowed to tie anyone because that way you give more points than everyone else...

Oh yeah, ties dont count. I'll just put the first name in the tie first, and move the second one one rank lower.

1) Tyrion Lannister
2) Daenerys Targaryen
3) Robb Stark
*actually Dany & Robb are pretty much tied so you can choose ;P
4) Arya Stark
5) Jon Snow
6) Gendry Waters
7) Talisa Stark
8) Ned Stark
9) Ygritte
10) Bronn

^ If you don't mind, Celine, I'm definitely going to choose Robb, then :P

I wish more people would participate in this... it's been open for so long now! :(

^ Agreed. Anyway, I've counted the votes and the article is coming up soon. NO MORE LISTS, AND NO MORE CHANGING YOUR LISTS.
Thank you!