In 2003, he became a member of the state executive board, and from 2005 to 2011, he was the deputy chairperson of the regional association Die Linke Sachsen.

[4] Starting from the 5th legislative period, he became the spokesperson for Budget and Finance within his party in the Saxon State Parliament.

He also served as the parliamentary managing director of his party from the start of the 6th legislative period until his resignation in February 2017.

[6][7] Despite the Berlin rent cap being declared void in March 2021 due to lacking legislative competence, Scheel ruled out resignation in an interview with rbb Inforadio.

[9] In the Berlin state election of 2021, he won a mandate but surprisingly resigned on December 14, 2021, citing personal reasons.

[11] In terms of foreign policy, Scheel supports the Russia-friendly stance of his party colleague Sahra Wagenknecht.