nhl defenseman vote off

not sure if one exists, but inspired by the goalies and overall players, but not many defensemen. i will take 2 per team and regualar rules (one vote per person per day, + one player, - one player) so here it is including my first vote:

+ t. kaberle, - brewer

1. Tomas Kaberle-11
2. Bryan McCabe-10
3. Mike Green-10
4. Tom Poti-10
5. Mattias Ohlund-10
6. Sami Salo-10
7. Dan Boyle-10
8. Paul Ranger-10
9. Eric Brewer-9
10. Erik Johnson-10
11. Brian Campbell-10
12. Craig Rivet-10
13. Sergei Gonchar-10
14. Ryan Whitney-10
15. Ed Jovanovski-10
16. Keith Ballrd-10
17. Kimmo Timonen-10
18. Jason Smith-10
19. Wade Redden-10
20. Anton Volchenkov-10
21. Michal Rozsival-10
22. Paul Mara-10
23. Chris Campoli-10
24. Bryan Berard-10
25. Colin White-10
26. Vitaly Vishnevski-10
27. Marek Zidlicky-10
28. Shea Weber-10
29. Roman Hamrlik-10
30. Andrei Markov-10
31. Brent Burns-10
32. Keith Carney-10
33. Rob Blake-10
34. Lubomir Vishnovsky-10
35. Bryan Allen-10
36. Mike Van Ryn-10
37. Sheldon Souray-10
38. Joni Pitkanen-10
39. Brian Rafalski-10
40. Niklas Lidstrom-10
41. Sergei Zubov-10
42. Phillipe Boucher-10
43. Ron Hainsey-10
44. Dick Tarnstrom-10
45. John-Michael Liles-10
46. Scott Hannan-10
47. Dustin Byfuglien-10
48. Brent Seabrook-10
49. Frantisek Kaberle-10
50. Joseph Corvo-10
51. Dion Phaneuf-10
52. Adrien Aucoin-10
53. Jaroslav Spacek-10
54. Toni Lydman-10
55. Zdeno Chara-10
56. Dennis Wideman-10
57. Tobias Enstrom-10
58. Niclas Havelid-10
59. Chris Pronger-10
60. Scott Niedermayer-10

sry to Mathieu Schneider fans, it was tough to pick niedermayer over him, but c'est la vie.

Before I do this, as I have not taken part in any of these, what are the voting criteria?  Is it just personal preference, or is there more to it?