[10] In September 2015, she was elected Deputy President of the Western Australian Local Government Association (WALGA).
This came as the seat's incumbent, Liberal Party MP Christian Porter, faced controversies, including a rape allegation and legal action against the ABC.
The West Australian said that "the battle for Pearce will be one of the most highly scrutinised during the next Federal election".
[5] On 1 December 2021, Porter announced he would not contest the seat of Pearce at the 2022 election, and he will retire from politics.
[24] On 20 December 2021, City of Wanneroo councillor Linda Aitken was chosen to be the Liberal Party's candidate for Pearce.
[28] Roberts renounced her United Kingdom citizenship in 2021 ahead of the 2022 election in order to comply with Section 44 of the Constitution of Australia.