Lu stood as a list-only candidate for the
National Party in the , ranked 26th on the
party list. She was the highest-ranking new candidate for National, ranked ahead of 17 sitting National MPs, Lu was National's only candidate of Chinese ethnicity in 2020. National did not perform strongly enough for Lu to be elected. The National Party released its list for the
2023 general election on 19 August 2023. Lu was ranked 20th, the highest-ranked candidate not already in parliament. After the election, she was the highest ranked National list candidate not elected.
Andrew Bayly had been expected to win the
Port Waikato seat, but another candidate for Port Waikato died after advance voting had started, so the electorate votes were not counted and Bayly was elected from the list ahead of Lu. Bayly then won a
by-election for Port Waikato held on 25 November 2023 and vacated his list seat, which was taken by Lu. Lu is a member of the
Finance and Expenditure Committee and since January 2025 has been deputy chair of the Regulations Review Committee. ==References==