How do you say the noun form of "Campaign" I know that in Chinese we can say "竞选” for campaigning （as in a verb). But, if I wanted to say "campaign" as in "Obama's Campaign" how would I say that? I've seen 竞选活动 in dictionaries。 But， would people say  奥巴马的“竞选活动“？
We use 竞选 as noun in your case. 在这次奥巴马的竞选中。The local media prefer using 竞选 than 竞选活动 though both are okay.