[1] In early counting, within an hour of the close of polls, the Australian Broadcasting Corporation's psephologist Antony Green's electoral computer had predicted Labor to retain the electorate with an increased margin.

The result in Longman has been noted as helping to accelerate the replacement of Malcolm Turnbull as prime minister and Liberal leader in the following month.

[3] Due to the High Court ruling against Senator Katy Gallagher on 9 May 2018 as part of the ongoing parliamentary eligibility crisis, Lamb and three other MPs in the same situation announced their parliamentary resignations later that day,[1] while the Perth incumbent resigned for family reasons.

Popularly labelled "Super Saturday", the occurrence of five simultaneous federal by-elections is unprecedented in Australian political history.

[5] The others are: Mark Latham, Labor leader between December 2003 and January 2005, voiced a robocall authorised by Pauline Hanson, in an attempt to discourage Labor voting and instead encouraged minor party voting.