The Price of a Member of Parliament’s Seat. How Much Does It Cost to Convince a Voter? A Comparison of Expenditures on Election Campaigns by Polish Political Parties in 2011–2019. MEiP [Internet]. 2024 Mar. 31 [cited 2026 Mar. 16];80(1):109-21. Available from: https://mysl.lazarski.pl/mysl/article/view/2106