During election campaign for the [[2002 Ukrainian parliamentary election]] the name of Konstantin Grigorishin was mentioned in connection with sponsorship of [[Viktor Yushenko]]’s<ref>{{Cite web|title=Путин может оставить Кучму|url=http://www.pravda.com.ua/rus/news/2002/10/25/4370087/|access-date=2020-09-08|website=Украинская правда|language=ru}}</ref> “[[Our Ukraine]]”the political party and “[[Party of Free Democrats|Yabloko]]”.<ref name="korrespondent.net">{{Cite web|title=Задержан известный бизнесмен Григоришин|url=https://korrespondent.net/ukraine/politics/57247-zaderzhan-izvestnyj-biznesmen-grigorishin|access-date=2020-09-08|website=korrespondent.net|language=ru}}</ref><ref name="kyivpost.com"/><ref name="LIGAkonstantin-3122309"/> In the same time he was alleged to have financed the [[Social Democratic Party of Ukraine (united)]] (SDPU(o)).<ref>{{Cite web|title=Константин Григоришин: Сейчас все "Динамо Киев" оформлено на двух людей. Я заберу его у Суркиса из принципа|url=http://www.pravda.com.ua/rus/articles/2004/12/14/4383935/|access-date=2020-09-08|website=Украинская правда|language=ru}}</ref><ref name="kyivpost.com"/><ref name="LIGAkonstantin-3122309"/> shareholding in “Ukrrichflot” company.
Grigorishin has also been considered as one of the sponsors of the 2004 [[Orange Revolution]],<ref name="pravda.com.ua"/><ref>{{Cite web|title=Показания Игоря Коломойского в Лондонском суде|url=http://www.pravda.com.ua/articles/2007/07/9/3255489/|access-date=2020-09-08|website=[[Українська правда]]|language=uk}}</ref> although he denied it.
