Sigge is (co)author to these books: “Om Politisk Tæft” (2008), “Politisk Psykologi – fordi politik er personligt” (2009), “Projekt Løkke” (2010), “Politisk Marketing” (2011) og “Marketized Politics” (2013), ”Entreprenørstaten” (2021), ”Vilde Problemer” (2023) og ”Wild Problems in Western Democracies (2024)”
In his academic work, he has published a number of national and international scientific articles. In addition, he has been a peer-reviewer in international scientific journals, such as Electoral Studies, International Political Science Review, Journal of Political Marketing and Political Psychology.