This is because nearly two-thirds of US corporations end up paying the personal income tax on profits, not the corporate one.

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This is the first of two sightings Adrian has but he does tell us he cannot be a 100% sure of either as they were both at night.

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Of course we acknowledge that this idea is a little recycled - we had two ethical columnists on the show giving us their advice.

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This is what leads us to the more serious medium term political consideration, how can the two coalition parties agree a set of joint spending plans that spans the next election?

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And I want to thank all of you here because this campaign is the result of everything that so many of you have shared with us and taught us over the past two years.

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And, you know, it is a testimony to the Democratic Party and it is a testimony to this country that we have the opportunity to make history, because I think one of us two will end up being the next president of the United States of America.

CNN: Transcript of Thursday's Democratic presidential debate