 Kunyange zvazvo akaita mushandirapamwe wokusiya mu1975, Plaid akaita mushandirapamwe wokusarudza kuramba ari muUnited Kingdom mu2016, vachishandisa 27,495 pakurwisa. Mukubvunzurudza Wales yakavhota 52.5 ichitsigira Kusiya. Pakarepo mushure mokubvunzurudzwa, Leanne Wood akataura kuti vavhoti vanofanira kuremekedzwa uye vakatsoropodza kudanidzira kwechipiri kweEU referendum. Plaid Cymru gare gare akachinja mutemo wavo kuti atsigire Vhoti yeVanhu. 