Mölder, Martin (2018). «Estonia: Political development and data for 2017». European Journal of Political Research Political Data Yearbook (på engelsk). 57: 120. doi:10.1111/2047-8852.12205. «The IRL had been struggling with its image for a while, and after the former Chairman Margus Tsahkna had failed to reinvigorate the party, he was replaced by amore reserved and conservative Helir-Valdor Seeder […] After the change in leadership, Tsahkna and another high-profile member from the former Res Publica, Marko Mihkelson, left the party, thus weakening its position even more.»