You can use Antony Green's 2019 federal election calculator to get an idea of what the next House of Representatives might look like.

The calculator is a way of converting percentage support for political parties into numbers of seats in Parliament.

Both sides have been on an election footing for more than a year, with the dual citizenship saga having forced eight politicians to face by-elections to retain their positions.

By-elections and redistributions mean the Coalition notionally holds only 73 seats in the expanded 151-seat House of Representatives.

Labor notionally holds 72; the Victorian seats of Corangamite and Dunkley having been nudged onto the Labor side of the electoral pendulum by their new boundaries.

It creates the unusual situation where both the Coalition and Labor need to gain seats if they want to form government.

But you don't have to wait for election night to see what the results might be.