It's the tightest and most contentious election in recent United States history. And the stakes for allies like Australia couldn’t be higher.

Kamala Harris and Donald Trump are neck-and-neck in the swing states that matter. The Vice President and Democratic candidate offers continuity and diplomatic norms in a pitch that has failed to spark key voters; the former President and Republican candidate promises a trade war that could hurt our economy – while dodging questions on if he’ll accept the result.

Who will win? What will America look like the day after? And how will a new president reshape alliances and global world order?

On the eve of polling day, a panel of experts – with unique insight into the candidates and the potential consequences – was convened for the ABC's Q&A program.

Panellists: Entrepreneur and former Donald Trump adviser Anthony Scaramucci, Former Australian ambassador to the US Dennis Richardson, Foreign Policy editor and Good Weekend contributor Amelia Lester, and US Studies Centre Senior Fellow and former Democrats staffer Bruce Wolpe.