Flags and arms of cantons of Switzerland there is overlap; Unterwalden and Solothurn share the same colours, as do Basel and Appenzell, and with the accession of the modern cantons, Valais and Basel-City, and St. Gallen and Thurgau. Of the 26 cantons since 1999 (22 cantons in 1848, accession of Jura in 1979, three half-cantons designated "canton" in 1999): Distinctively, Swiss cantons use square flags. Historically, the number of cantons was: Nidwalden and Obwalden form traditional subdivisions of Unterwalden. Basel-Stadt and Basel-Landschaft, as well as Appenzell Inner- and Ausserrhoden, are half cantons, resulting from the division of Basel and Appenzell, respectively. The Swiss Federal Constitution of 1999
Right of expatriates to vote in their country of origin solely to citizens living in that country, thereby stripping expatriate citizens of their voting rights once they leave their home country (such as Ireland, with extremely limited exceptions). Expatriates' voting rights in local elections sometimes vary within individual countries, usually those with federal systems, such as Switzerland and the United States. For example, Swiss expatriates originally hailing from certain cantons may vote in elections at cantonal level, while those from other cantons may not. The issue has been raised by European Union institutions, particularly in relation to citizens of one EU state resident in another. As of 2006, 93 countries