David Torrance is Devolution and Constitution Specialist at the House of Commons Library. He was formerly a freelance writer, broadcaster and journalist, reporting on the Scottish Parliament for STV, and contributing political commentary to a wide range of publications including The Scotsman, The Herald and The Times. He is the author of several books on Scottish politics, the best known being his unauthorised biographies of Nicola Sturgeon and Alex Salmond. He is the author of Standing up for Scotland: Nationalist Unionism and Scottish Party Politics, 1884–2014 (Edinburgh University Press, 2020) and the editor of Ruth Davidson's Conservatives: The Scottish Tory Party, 2011–19 (Edinburgh University Press, 2020) and Whatever Happened to Tory Scotland (Edinburgh University Press, 2012).