A constitutional referendum was held in Switzerland in July and August 1848, the first referendum on record in the Swiss Confederation. The new constitution was approved by 72.8% of voters and a majority of cantons.
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Nội dung từ bài Wikipedia “Trưng cầu dân ý hiến pháp Thuỵ Sĩ năm 1848”, theo giấy phép CC BY-SA 4.0.