[3] Lotta Johnsson Fornarve studied at Stockholm Institute of Education.

Between 1976 and 1994, she was the international secretary of Isolera Sydafrika-Kommittén [sv] (Isolate the South Africa Committee (ISAK)).

[4] Johnsson Fornarve is a board member for Vänsterns internationella forum [sv] (VIF) and was the district president for the Left Party in Södermanland between 2006 and 2012.

She has also been a member of the Left party's board of directors between the years of 2010 to 2016.

[4] She took over as the left party's defense-political spokesperson in 2017 after Stig Henriksson resigned.