revision preference src: They both played main roles during the campaign for the 1993 plebiscite, which represented the hitherto only real opportunity for a return of the monarchy since the proclamation of the republic, in 1889. <SEP> tgt: They both played main roles during the campaign for the 1993 plebiscite in 1889. The 1993 plebiscite represented the hitherto only real opportunity for a return of the monarchy since the proclamation of the republic.