During the 2021 Dutch general election, Marleen de Rooy provided extensive coverage, including live updates and expert analysis. Her reporting helped demystify the complex political environment, making the election process more accessible to the general public.

In 2019, Marleen de Rooy launched a political podcast series with NOS, focusing on current political issues and interviews with key political figures. The series was praised for its insightful discussions and ability to engage a wide audience in political discourse.

Marleen de Rooy's coverage of the 2017 Dutch general election was highly acclaimed. She provided in-depth reports and analyses of the electoral process, party platforms, and potential coalition formations, contributing significantly to the public's understanding of the election outcomes.

In 2015, Marleen de Rooy was promoted to Senior Political Correspondent at NOS. This role expanded her responsibilities, allowing her to delve deeper into political reporting and analysis, and solidifying her position as a leading voice in Dutch political journalism.

Marleen de Rooy was a key reporter during the 2012 Dutch general election, offering detailed analysis and live updates. Her coverage was noted for its depth and clarity, helping the public understand the shifting political landscape and the formation of the new government.

In 2010, Marleen de Rooy played a significant role in covering the Dutch general election for NOS. Her reporting provided viewers with comprehensive insights into the election process, party strategies, and the implications of the election results on Dutch politics.

Marleen de Rooy began her career at NOS in 2006, where she quickly established herself as a dedicated political journalist. Her early work involved covering national politics, and she became known for her thorough understanding of parliamentary procedures and political dynamics.