[1] He is the first member of the National Diet who was born in the Heisei era along with Yuki Baba.

[2][3] Tsuchida ran for the House of Representatives in the 2021 election endorsed by the Liberal Democratic Party.

On 15 September 2023, he became Parliamentary Vice-Minister of Digital Affairs and Parliamentary Vice-Minister of Cabinet Office (in charge of administrative reform and regulatory reform) in the Second Kishida Cabinet.

[4] Tsuchida supported Digital Minister Taro Kono in the 2024 LDP presidential election, which Shigeru Ishiba ultimately won.

[6] In November of the same year, he was appointed Parliamentary Vice-Minister of Finance in the Second Ishiba Cabinet.