During the
2018 presidential election campaign, Huhtasaari was accused of
plagiarising parts of her 2003 M.Sc. thesis. The matter was investigated by her
alma mater, the
University of Jyväskylä, with the conclusion that only 10 per cent of the thesis was plagiariased, and that the plagiarism was not particularly serious considering the policies of the university at the time. However, in May 2018, Finland's national
public broadcasting company
YLE reported that approximately 30 per cent of the thesis was plagiarised, after an YLE journalist identified a previously unknown source for the text in Huhtasaari's thesis. Huhtasaari responded by claiming to have written the dissertation in good faith, relying on any shortcomings being detected during the review process. She also claimed to have followed the university's own guidance regarding citing of earlier theses, namely that such citations were (allegedly) advised against, as dissertations could not be guaranteed to be of sufficiently high academic standards. To defend her integrity, Huhtasaari published a positive employment certificate for her 1-year-tenure as a second-grade teacher at an
elementary school in the
Marshall Islands from April 2000. The University of Jyväskylä released its detailed report in August 2018, finding serious plagiarism and disregard for the
scientific method throughout Huhtasaari's thesis. As the statute of limitations had passed, the university will not pursue further action. ==Elections contested==