Romansh language of Grisons, and is a working language in various districts and numerous municipalities within the canton. The first Swiss constitution of 1848, as well as the subsequent revision of 1872, make no mention of Romansh, which at the time was not a working language of the Canton of Grisons either. The federal government did finance a translation of the constitution into the two Romansh varieties Sursilvan and Vallader in 1872, noting however that these did not carry the force of law. Romansh became a national language of Switzerland in 1938, following a referendum. However, a distinction was introduced between "national
Romansh language Sursilvan and Engadinese as the languages of ballots, a referendum was launched to amend the relevant article. In the referendum, which took place on June 10, 2001, 65% voted in favor of naming Rumantsch Grischun the only official Romansh variety of the Canton. Opponents of Rumantsch Grischun such as Renata Coray and Matthias Grünert argue, however, that if only those municipalities with at least 30% Romansh speakers were considered, the referendum would have been rejected by 51%, with an even larger margin if only those with at least 50% Romansh speakers were considered. They thus interpret the results as the