Hello. I'll be grateful for some help.

Question

1)Is it possible to say: "peace in all the world" or is it "in the whole world"?
2)Do you think it's possible to say: "a candidate for president" or "candidate for the presidential post" or "candidate for the President's post"?
3)Do you think it's natural to say:"I think an outright victory in the presidential elections in Venezuela will be won by Chavez" (I mean, is Passive OK?)
Thank you very, very much for help.

Answer 1

1. Either way is fine.

2. Any of those will be fine. Also "candidate for the presidency" ...

3. It's OK, but the sentence would be better if you phrase it in the active voice rather than the passive.