The Turnbull Government has lost its one-seat majority after the High Court ruled Barnaby Joyce's election invalid because of his New Zealand citizenship.

Mr Joyce will now face a by-election. The court also found former Greens senators Scott Ludlam and Larissa Waters were not validly elected, along with One Nation's Malcolm Roberts and the National Party's Fiona Nash.

Look back over the live blog to see how it all unfolded.