Sommaruga held the directorship of the Consumer Protection Foundation (German: Stiftung für Konsumentenschutz) from 1993 to 1999, which earned her public recognition in the German-speaking part of Switzerland, where it was active. She held the presidency of that foundation from 2000 to 2010, as well as that of the aid organisation Swissaid from 2003 to 2008. She was also patron ofSAFFA 2020, alongside then-Federal CouncillorsDoris Leuthard andEveline Widmer-Schlumpf, as well as former Federal CouncillorMicheline Calmy-Rey.[8]
On 11 August 2010, she announced her candidacy to succeed fellow party memberMoritz Leuenberger, who had announced his resignation, in theupcoming election to theFederal Council.[10] Sommaruga was elected by theFederal Assembly on 22 September 2010.[9] She was eventually elected for a full four-year term in2011, before successfully seeking reelection in2015 and2019.
On 4 December 2013, Sommaruga was elected as Vice President of Switzerland by the Federal Assembly for 2014, alongsideDidier Burkhalter, who was electedPresident of the Swiss Confederation. On 3 December 2014, she was elected to the presidency for 2015, alongsideJohann Schneider-Ammann as Vice President of Switzerland. Her first international presidential trip was toParis, where she joined theRepublican marches of 11 January 2015, organised to defend freedom of speech following theCharlie Hebdo shooting perpetrated by Islamic terrorists. She served as President of the Confederation until 31 December 2015, when Schneider-Ammann succeeded her.
On 1 January 2019, she returned to the vice presidency under PresidentUeli Maurer. Sommaruga became President of the Swiss Confederation again in 2020, a year marked by theCOVID-19 pandemic.[11] She opened the2020 Winter Youth Olympics inLausanne during the opening ceremony. She was succeeded byGuy Parmelin on 1 January 2021.
On 2 November 2022, she announced her upcoming resignation from the Federal Council. She stated the decision had come abruptly following a stroke suffered by her husband.[12]
^"Patronat" (in German). 2020.ch. Archived fromthe original on 3 March 2016. Retrieved2 December 2014.
^abcUVEK, Eidgenössisches Departement für Umwelt, Verkehr, Energie und Kommunikation."Lebenslauf".uvek.admin.ch (in German). Retrieved31 July 2019.{{cite web}}: CS1 maint: multiple names: authors list (link)