Mark Riley hosts Seven’s The Great Debate: The Final Showdown on Wednesday night between Scott Morrison and Anthony Albanese.

The debate will also feature questions from The West Australian’s Federal Political Editor Lanai Scarr.

In an Australian television first it will feature “The Pub Test” to determine the winner. Seven has assembled a panel of approximately 150 undecided voters who will judge the debate and cast their votes live from pubs in seven marginal seats– Macquarie in NSW, Chisholm in Victoria, Lilley in Queensland, Boothby in South Australia, Hasluck in Western Australia, Solomon in the Northern Territory and Bass in Tasmania.

Immediately following the debate, Michael Usher will anchor a special edition of Seven News, joined by Mark Riley, Lanai Scarr and Professor Simon Jackman – a leading expert on Australian politics, foreign policy, public opinion and polling.

They will cross live to the marginal seats to hear from “Pub Test” as a winner is announced.

9:10pm Wednesday on Seven, 7plus and The West Australian.