Parliamentary career
- Member of Althingi for the Reykjavík North Constituency 2003–2009, for the Reykjavík South Constituency 2009–2016 and for the Reykjavík North Constituency since 2016 (Independence Party).
Party group
- Chair of the Independence Party's parliamentary group 2016–2017.
- Deputy Chair of the Independence Party's parliamentary group 2013–2016 and 2005–2007.
Earlier committees
- Member of the Budget Committee 2016–2017 and 2013–2016 (1st Deputy Chair 2013–2016).
- Member of the Foreign Affairs Committee 2013–2014.
- Member of the Economic Affairs and Trade Committee 2011–2013.
- Member of the Health Committee 2009–2011.
- Member of the Trade Committee 2009–2011.
- Member of the Environment Committee 2003–2007 (Chair 2004–2007).
- Member of the Fisheries Committee 2003–2007.
- Member of the Social Affairs Committee on 2003–2006 (Deputy Chair 2003–2006).
- Member of the EU-Iceland joint Parliamentary Committee 2013–2016 (Chair 2013–2016).
- Member of the Icelandic delegation to the EFTA and EEA Parliamentary Committees 2013–2016 (Chair 2013–2016).
- Member of the Icelandic delegation to the EFTA Parliamentary Committee 2003–2007 (Chair 2005–2007).
Ministerial career
- Minister of the Environment, Energy and Climate since 2021.
- Minister for Foreign Affairs and International Development Cooperation 2019–2021.
- Minister for Foreign Affairs and External Trade 2017–2019.
- Minister of Health and Social Security 2007–2009.
Political party career
Member of Reykjavík City Council 1998-2006. Member of the Board of The Consumers Association of Iceland 2004-2006. Deputy Chair of the International Young Democrat Union, IYDU, 1998-2002. Chair of the Independence Partys Committiee on Trade 1997. Member of the Board of Democrat Youth Community of Europe, DEMYC, 1997-2001. Member of the Executive Board of the Independence Party 1993-1997. Member of the Central Board of the Independence Party 1991-1997. Chair of the National Youth Organization of the Independence Party 1993-1997.
