Proposition is a Ukrainian political party founded in 2020 by the mayors of six major cities: Borys Filatov of Dnipro, Andriy Raykovych of Kropyvnytskyi, Oleksiy Kaspruk of Chernivtsi, Oleksandr Senkevych of Mykolaiv, Andriy Dyachenko of Kakhovka, and Serhii Sukhomlyn of Zhytomyr. Wikipedia