2015 Parliament Cameron was elected as an SNP MP for the
East Kilbride, Strathaven and Lesmahagow seat at the
2015 UK general election. The seat and its predecessor,
East Kilbride had been won by successive Labour Party candidates since 1974. Cameron is the first clinical psychologist to be elected as an MP to the
House of Commons. During the 2015–17 Parliament, Cameron was a member of the
International Development Committee and the International Development Sub-Committee on the Work of the Independent Commission for Aid Impact. On 5 January 2016, the
Scottish Daily Mail published a story highlighting that Cameron owned five ex-council houses (managed by her husband) despite campaigning against the sale of council houses at the 2015 general election. She responded by stating that she had been transparent in her property dealings and had declared ownership of the properties per parliamentary rules in her register of interests. Cameron made a complaint about the article to the
Independent Press Standards Organisation (IPSO), which was not upheld.
2017 Parliament Cameron retained her seat at the
2017 snap general election with 21,023 votes and both a reduced vote share and a majority of 3,866 votes. The SNP lost one third of their MPs at this election. Following the election, Cameron was elected to be part of the
Health Select Committee and the Commons Reference Group on Representation and Inclusion. In 2017, Cameron launched the successful
Lucy's Law campaign in the House of Commons against puppy farming which became statute in 2019. In 2018, Cameron led the
Ivory Bill for the SNP through the House of Commons. In 2019, Cameron described receiving abusive messages and threats with
deselection after voting against legalising abortion in Northern Ireland in a conscience vote. An SNP assessor reportedly said he would recommend anyone with these views should have their application rejected to be a candidate and she should "quit her position as an elected representative." In September 2019, Cameron's local SNP branch passed a motion which criticised the National Executive Committee's decision “to impose Dr Lisa Cameron as the party's candidate in the forthcoming General Election for the second time".
2019 Parliament 2019 - 2023: Sitting as SNP MP Cameron was returned to Parliament at the
2019 general election with a majority of 13,322. On 29 June 2020, Cameron was the only SNP MP to vote on a motion to introduce a Bill to restrict
anti-abortion demonstrations near
abortion clinics in England. She voted against the motion, submitted on her behalf by the SNP Chief Whip. Cameron claimed to receive over 3,000 "thank you notes" from people across Scotland supporting her
anti-abortion stance. Cameron later revealed that she had received a death threat as a result of her vote. Cameron received an Award for Distinguished Contribution to Practice of Psychology from the
British Psychological Society in 2020 for her work as a psychologist in NHS Scotland and on mental health in Parliament. Cameron was reportedly given the title in 2021 as SNP Parliamentary Carers Champion for Carers Week. In 2021, Cameron helped set up the
All-Party Parliamentary Group (APPG) for
Crypto and Digital Assets and, in 2022, Cameron was appointed Chair of the APPG. In October of that year, Cameron was awarded the
Order of Saint Agatha by the
Republic of San Marino. In January 2023, the UK Government took the unprecedented decision to intervene in blocking the Scottish Government's
Gender Recognition Reform (Scotland) Bill, despite this policy area being a
fully devolved competency for the Scottish Government. In response, Cameron wrote to Conservative Scottish Secretary
Alister Jack, calling on him to "find a resolution" in a way that didn't undermine the devolution settlement.
September-October 2023: "Ostracisation" and defection to Conservative Party In September 2023, Cameron, who had chosen to re-contest selection for her seat at the next election, was one of five sitting SNP MPs involved in selection contests. Cameron publicly threatened to resign, and call a
by-election if SNP members did not nominate her as the candidate. Cameron then spoke of falling out with the party leadership the year before over its handling of an MP who was suspended for making a sexual advance to a staff member, but was welcomed back by the party post-suspension. On 12 October, the day the result of her selection vote was to be announced, Cameron defected from the SNP to the Conservative Party. Grant Costello, who was leading in the selection contest, On 13 October, Cameron said she and her family had to go into hiding after
death threats following her defection.
Humza Yousaf claimed that Cameron's defection was the "least-surprising news I've had as leader of the SNP", and called on her to resign as an MP. Prime Minister, and Conservative Party Leader,
Rishi Sunak hailed Cameron's decision as "brave". In an interview with
The Herald, Cameron said that "many factors" contributed to her defection, including a "difficult relationship with the party leadership". Later that month, Cameron told
BBC Radio 4's ''
Women's Hour'' she had also changed her views regarding
Scottish independence, stating "“I feel like Scotland’s exhausted by nationalism and all of our services are exhausted now. It’s become very divisive".
Post-defection parliamentary career Shortly after her defection, Cameron announced she would not be standing as the next at the
next general election, citing the "trauma of receiving threats of violence within a toxic local political context". In June 2024, she was unsuccessful in the selection contest to succeed
John Redwood in his
Wokingham seat. After this news, Cameron confirmed that she would not be seeking re-election, but said she hoped the UK “would see a positive election campaign”.
Disability activism Throughout her parliamentary career, Cameron was a strong parliamentary advocate on
disability rights in the United Kingdom. She chaired the Disability All Party Parliamentary Group in the House of Commons from 2015 to 2024, and became one of the few Disability Confident Level 2 employers, also asking then
Prime Minister Boris Johnson to sign up to this scheme. Cameron also frequently led on debates and hosted numerous events in Parliament relating to disability issues during her time as a Member of Parliament. Cameron has received several awards in recognition of her activism. In 2022, she received the MP of the Year Award from Patchwork Foundation for her disability activism and campaigns against online abuse. That same year
Speaker of the House of Commons,
Sir Lindsay Hoyle, presented Cameron with an Award and praised her "indefatigable campaigning" on disability. In March 2024, Cameron was awarded with a lifetime award for services to disability by disability charity Universal Inclusion presented to her by the then
Minister for State for Disabled People,
Mims Davies. ==Post-parliamentary career==