My ranking of the nominees so far...

1. Jane Fonda in Klute
2. Diane Keaton in Annie Hall
3. Ingrid Bergman in Autumn Sonata
4. Emily Watson in Breaking the Waves
5. Sophia Loren in Two Women
6. Elizabeth Taylor in Who's Afraid of Virginia Woolf?
7. Vivien Leigh in Gone with the Wind
8. Liza Minnelli in Cabaret
9. Michelle Pfeiffer in The Fabulous Baker Boys
10. Kate Winslet in Eternal Sunshine of the Spotless Mind
11. Audrey Hepburn in The Nun's Story
12. Jane Fonda in They Shoot Horses, Don't They?
13. Jane Fonda in Coming Home
14. Natalie Portman in Black Swan
15. Charlize Theron in Monster
16. Audrey Hepburn in Breakfast at Tiffany's
17. Halle Berry in Monster's Ball
18. Sissy Spacek in In the Bedroom
19. Leslie Caron in The L-Shaped Room
20. Brenda Blethyn in Secrets and Lies
21. Barbara Stanwyck in Double Indemnity
22. Penélope Cruz in Volver
23. Liza Minnelli in The Sterile Cuckoo
24. Judy Garland in A Star is Born
25. Anne Bancroft in The Miracle Worker
26. Bette Davis in What Ever Happened to Baby Jane?
27. Sissy Spacek in Coal Miner's Daughter
28. Sigourney Weaver in Aliens
29. Jennifer Jones in The Song of Bernadette
30. Ellen Burstyn in Resurrection
31. Liv Ullmann in Face to Face
32. Gena Rowlands in A Woman Under the Influence
33. Julianne Moore in Far from Heaven
34. Bette Davis in The Little Foxes
35. Glenda Jackson in A Touch of Class
36. Kathy Bates in Misery
37. Diane Lane in Unfaithful
38. Jane Fonda in Julia
39. Joan Fontaine in Rebecca
40. Anna Magnani in Wild is the Wind
41. Sissy Spacek in Carrie
42. Helena Bonham Carter in The Wings of the Dove
43. Frances McDormand in Fargo
44. Fernanda Montenegro in Central Station
45. Michelle Williams in Blue Valentine
46. Jane Fonda in The Morning After
47. Ellen Burstyn in The Exorcist
48. Barbara Stanwyck in Sorry, Wrong Number
49. Katharine Hepburn in Long Day's Journey Into Night
50. Geraldine Page in Interiors
51. Ellen Burstyn in Alice Doesn't Live Here Anymore
52. Annette Bening in Being Julia
53. Maggie Smith in The Prime of Miss Jean Brodie
54. Isabelle Adjani in The Story of Adele H.
55. Julie Christie in McCabe & Mrs. Miller
56. Natalie Wood in Splendor in the Grass
57. Imelda Staunton  in Vera Drake
58. Catalina Sandino Moreno in Maria Full of Grace
59. Jean Simmons in The Happy Ending
60. Julie Andrews in Mary Poppins
61. Julie Walters in Educating Rita
62. Judi Dench in Notes on a Scandal
63. Cate Blanchett in Elizabeth
64. Katharine Hepburn in Suddenly, Last Summer
65. Simone Signoret in Room at the Top
66. Glenda Jackson in Sunday Bloody Sunday
67. Kim Stanley in Seance on a Wet Afternoon
68. Pauline Collins in Shirley Valentine
69. Irene Dunne in Love Affair
70. Meryl Streep in The Devil Wears Prada
71. Meryl Streep in Julie & Julia
72. Elizabeth Taylor in Cat on a Hot Tin Roof
73. Patricia Neal in Hud
74. Ingrid Bergman in Gaslight
75. Mary McDonnell in Passion Fish
76. Catherine Deneuve in Indochine
77. Meryl Streep in Silkwood
78. Faye Dunaway in Network
79. Anne Bancroft in The Pumpkin Eater
80. Meryl Streep in Postcards from the Edge
81. Jessica Lange in Music Box
82. Lynn Redgrave in Georgy Girl
83. Jennifer Lawrence in Winter's Bone
84. Goldie Hawn in Private Benjamin
85. Claudette Colbert in Since You Went Away
86. Carey Mulligan in An Education
87. Renée Zellweger in Bridget Jones's Diary
88. Barbara Stanwyck in Ball of Fire
89. Gabourey Sidibe in Precious: Based On the Novel Push by Sapphire
90. Judi Dench in Mrs Brown
91. Irene Dunne in The Awful Truth
92. Geraldine Page in Sweet Bird of Youth
93. Emma Thompson in Howards End
94. Greer Garson in Mrs. Parkington
95. Susan Sarandon in Lorenzo's Oil
96. Olivia de Havilland in Hold Back the Dawn
97. Mary Tyler Moore in Ordinary People
98. Susan Hayward in I Want to Live!
99. Marsha Mason in The Goodbye Girl
100. Rachel Roberts in This Sporting Life
101. Jill Clayburgh in An Unmarried Woman
102. Diahann Carroll in Claudine
103. Liv Ullmann in The Emigrants
104. Doris Day in Pillow Talk
105. Irene Dunne in I Remember Mama
106. Helen Hunt in As Good as it Gets
107. Cicely Tyson in Sounder
108. Valerie Perrine in Lenny
109. Bette Davis in Mr. Skeffington
110. Sophia Loren in Marriage Italian Style
111. Nicole Kidman in Rabbit Hole
112. Faye Dunaway in Chinatown
113. Helen Mirren in The Queen
114. Kate Winslet in Little Children
115. Barbara Stanwyck in Stella Dallas
116. Kate Winslet in Titanic
117. Jessica Tandy in Driving Miss Daisy
118. Jane Wyman in Johnny Belinda
119. Greta Garbo in Camille
120. Lee Remick in Days of Wine and Roses
121. Shirley MacLaine in Terms of Endearment
122. Marlee Matlin in Children of a Lesser God
123. Dorothy Dandridge in Carmen Jones
124. Bette Davis in Dark Victory
125. Anouk Aimée in A Man and A Woman
126. Geraldine Page in Summer and Smoke
127. Michelle Pfeiffer in Love Field
128. Jane Wyman in Magnificent Obsession
129. Louise Fletcher in One Flew over the Cuckoo's Nest
130. Annette Bening in The Kids Are All Right
131. Piper Laurie in The Hustler
132. Deborah Kerr in Separate Tables
133. Luise Rainer in The Good Earth
134. Diane Keaton in Something's Gotta Give
135. Ida Kaminska in The Shop on the Main Street
136. Debra Winger in Terms of Endearment
137. Greta Garbo in Ninotchka
138. Maggie Smith in Travels with My Aunt
139. Marie-Christine Barraul in Cousin Cousine
140. Carol Kane in Hester Street
141. Keisha Castle-Hughes in Whale Rider
142. Audrey Hepburn in Sabrina
143. Anne Bancroft in The Turning Point
144. Shirley MacLaine in Some Came Running
145. Julia Roberts in Pretty Woman
146. Helen Mirren in The Last Station
147. Olivia de Havilland in The Snake Pit
148. Jane Alexander in Testament
149. Ingrid Bergman in Joan of Arc
150. Katharine Hepburn in The Philadelphia Story
151. Greer Garson in Blossoms in the Dust
152. Joan Fontaine in The Constant Nymph
153. Marsha Mason in Cinderella Liberty
154. Anjelica Huston in The Grifters
155. Isabelle Adjani in Camille Claudel
156. Sissy Spacek in Crimes of the Heart
157. Nicole Kidman in The Hours
158. Elizabeth Taylor in Raintree County
159. Elizabeth Taylor in Suddenly, Last Summer
160. Natalie Wood in Love with the Proper Stranger
161. Vanessa Redgrave in Morgan: A Suitable Case for Treatment
162. Janet Suzman in Nicholas and Alexandra
163. Nicole Kidman in Moulin Rouge!
164. Greer Garson in Goodbye Mr. Chips
165. Ingrid Bergman in For Whom the Bell Tolls
166. Joanne Woodward in Summer Wishes, Winter Dreams
167. Judi Dench in Iris
168. Jean Arthur in The More the Merrier
169. Janet Gaynor in A Star is Born
170. Barbra Streisand in The Way We Were
171. Diane Keaton in Marvin's Room
172. Kristin Scott Thomas in The English Patient
173. Shirley MacLaine in The Turning Point
174. Ginger Rogers in Kitty Foyle: The Natural History of a Woman
175. Greer Garson in Madame Curie
176. Joanne Woodward in The Three Faces of Eve
177. Glenda Jackson in Hedda
178. Rosalind Russell in Auntie Mamie
179. Julie Christie in Afterglow
180. Kathleen Turner in Peggy Sue Got Married
181. Diana Ross in Lady Sings the Blues
182. Joanne Woodward in Mr. & Mrs. Bridge
183. Meryl Streep in One True Thing
184. Joan Fontaine in Suspicion
185. Geneviève Bujold in Anne of the Thousand Days
186. Grace Kelly in The Country Girl
187. Ellen Burstyn in Same Time, Next Year
188. Deborah Kerr in Heaven Knows, Mr. Allison
189. Shirley MacLaine in Irma La Douce
190. Lana Turner in Peyton Place
191. Vanessa Redgrave in Mary, Queen of Scots
192. Debbie Reynolds in The Unsinkable Molly Brown
193. Emily Watson in Hilary and Jackie
194. Bette Davis in The Letter
195. Martha Scott in Our Town
196. Sandra Bullock in The Blind Side
197. Talia Shrie in Rocky
198. Hilary Swank in Million Dollar Baby
199. Gwyneth Paltrow in Shakespeare in Love
200. Naomi Watts in 21 Grams
201. Samantha Morton in In America
202. Gena Rowlands in Gloria
203. Renée Zellweger in Chicago
204. Salma Hayek in Frida
205. Ann-Margret in Tommy