Clarke-Smith was elected as the Conservative Party MP for
Bassetlaw in the 2019 general election when the sitting MP
John Mann stood down. He overturned a 4,852 Labour majority to a 14,013 Conservative majority, the biggest swing that election. This was the first time Bassetlaw had been represented by a party other than Labour since
Malcolm MacDonald won the seat in 1929. When elected, Clarke-Smith said his three main priorities were getting
Brexit done, improving
Bassetlaw Hospital and attracting more money for
Retford and
Worksop town centres. He also became the chair of the British–Finnish
all-party parliamentary group. In December 2019, Clarke-Smith became one of the members of the
eurosceptic European Research Group. In March 2020, Clarke-Smith was appointed to the
International Development Committee in Parliament. Clarke-Smith has received media attention for his views on
food banks and public provision of free school meals for children from more economically deprived families. He has described food banks as a "political weapon", saying it is "simply not true" that "people can't afford to buy food on a regular basis" and "If you keep saying to people that you're going to give stuff away, then you're going to have an increase I'm afraid." In October 2020, he opposed a Labour Party
opposition day motion to extend free school meals over holidays until Easter 2021. Campaigning on the issue of free school meals was led by the footballer
Marcus Rashford. Clarke-Smith said: "We need to get back to the idea of taking responsibility. This means less celebrity virtue signalling on
Twitter by proxy and more action to tackle the real causes of
child poverty." Following an interim report on the connections between
colonialism and properties now in the care of the
National Trust, including links with
historic slavery, Clarke-Smith was among the signatories of a letter to
The Telegraph in November 2020 from the "
Common Sense Group" of Conservative Parliamentarians. The letter accused the National Trust of being "coloured by Cultural
Marxist dogma, colloquially known as the '
woke agenda'". He has expressed concern over plans to close the mental health facilities at Bassetlaw Hospital and move provision to Mansfield, campaigned for the
Robin Hood train line to be extended to Retford and was a signatory to the successful East Midlands bid to be one of ten
Freeports. In June 2021, Clarke-Smith opposed the
England football team's intention to
take the knee at the forthcoming
European championship, saying: "Fans understand [racism] perfectly well – they are just sick and tired of being preached and spoken down to. They are there to watch a football match, not to be lectured on morality." In November 2021, he became an advocate of the
Down Syndrome Bill, which received Royal Assent as the
Down Syndrome Act 2022, and which legally recognises people with
Down syndrome as a specific minority group. In May 2022, when asked by
Channel 4 News presenter
Cathy Newman if he was "content to back a law-breaker in office", he replied: "I certainly am. And I think the
Prime Minister's done many achievements so far. I think he's still got a long time in office as well." Clarke-Smith later took issue with being quoted on the matter, writing to Cathy Newman on
Twitter: "Not sure why your sub-editor is using quotation marks here". On 6 June 2022, after a vote of no confidence in the leadership of
Boris Johnson was called, Clarke-Smith announced that he would be supporting the Prime Minister, describing the vote as "one of the most ridiculous acts of self-harm I have witnessed in a long time". The following day, Clarke-Smith was criticised on social media following an appearance on
Jeremy Vine, during which he accused people of "using personal tragedies" during the
COVID-19 pandemic for "party political agendas". Brendan Clarke-Smith briefly served as
Parliamentary Private Secretary to the
Minister without Portfolio and Minister of State from 11 February 2022 to 8 July 2022 and In February 2023, Clarke-Smith was part of a delegation of UK Parliamentarians consisting of several MPs and members of the
House of Lords who visited
Northern Cyprus and met with the
Turkish Republic of Northern Cyprus (TRNC) government. Clarke-Smith was one of 10 parliamentarians personally named in a
Commons Select Committee of Privileges special report on the “Co-ordinated campaign of interference in the work of the Privileges Committee”, published 28 June 2023. The report detailed how said parliamentarians “took it upon themselves to undermine procedures of the House of Commons” by putting pressure on the
Commons Privileges Committee investigation into Boris Johnson. Clark-Smith was appointed Deputy Chairman of the Conservative Party on 28 November 2023. He resigned on 16 January 2024 along with
Lee Anderson in order to vote for an amendment on the
Safety of Rwanda (Asylum and Immigration) Bill. The amendment, put forward by
Bill Cash, would "ensure UK and international law could not be used to prevent or delay a person being removed to Rwanda." Clarke-Smith lost the Bassetlaw seat to Labour in the
2024 United Kingdom general election. ==Post-parliamentary career==