American presidential elections

In January my class and I researched the American Electoral system and the federal government. It has been particularly interesting to follow the primary elections and the debates between Hillary Clinton anb Barrack Obama. Personally I hope Hillary Clinton wins even if Obama is more charismatic. I'd like to see a woman as President, I think she would be very efficient. She's certainly determined or she wouldn't have come so far. What do you think of the American system? Who do you think will win? Republicans or Democrats? Hillary or Obama?