Whoever wins the US Presidential battle - they will make history.

Hillary Clinton would of course be the first woman President - but Donald Trump would be the first President who is a Washington outsider who's never held an elected office.

MORE: Newstalk ZB's US Election Coverage

CNN's Jeff Zeleny is at Clinton's war room in New York where he says they're closely watching voting in the state of Michigan.

"Michigan and North Carolina, they do believe that those two states will be among the closest of all."

But Jim Acosta is at Trump headquarters and he told CNN the Republicans too believe they can take the state.

"If that happens, hold on to your hats. If Donald Trump can win Florida, North Carolina, Ohio, and then pick off Michigan, then the night gets very interesting."

Regardless of whether Donald Trump or Hillary Clinton wins, the next elected President will be largely constrained by voters' decisions on the bottom of the ballot paper - the Senate vote.

CNN commentator Paris Dennard said the House has veto power, and relies on Senator votes to pass legislation and decisions.

He said if Mrs Clinton is elected, a tip of the scales towards the Democrats could dramatically impact how she can set up her Cabinet.

"President Obama had it two ways. We had a Democrat Senate for two years, a Republican Senate for six years. Where it is going to make the biggest difference at the outset is on appointments."

These included Cabinet positions and Supreme Court nominations.

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