When I watched the trailer, my first thought was: she is... she, Meryl. Best than the original Tatcher.
However, Margaret is a true politician, but is part of those that people will love or hate forever... Personally, I hate her but still respect her implacable personality, a woman with "balls", iron balls. So, I hope that this movie don't put her in a false podium of greatness, but to show people that women also have balls (ovaries in this case) to take thugh decisions.