The conventions are done, and now the campaign is well and truly underway in the United States.

And America looks move divided than ever before.

So what should we expect over the next couple of months?

David Frum is a lifelong Republican who worked in the George H.W Bush' White House.

But he's one of many who's anti-Trump - so what does he make of the campaign?

David joined Mike Hosking to preview the 2020 US election, which is rapidly approaching.

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