Attje Harma Kuiken is a Dutch politician and former civil servant serving as the leader of the Labour Party in the House of Representatives since 22 April 2022. She has been a parliamentarian since 30 November 2006 with a brief interruption in 2010. She served two terms as parliamentary leader of the Labour Party, and was leader of the Labour Party between June and August of 2023.

Lodewijk Frans Asscher is a Dutch politician and jurist who served as Leader of the Labour Party (PvdA) from 2016 to 2021 and parliamentary leader in the House of Representatives from 2017 to 2021.