[BBC] Why the fuss?The main proposal calls for Swiss law to take precedence over international law and treaties. For supporters like Aliki Panayides, it would give voters "the final say on every issue".
She says: "That's all we want: it's us that says what is going on in Switzerland, not a foreign tribunal."
United in opposition are the Swiss government, all major political parties bar one, and a coalition of 120 civil society organisations, from environmental groups to groups which support the elderly, the disabled, or refugees.
'Yes, for democracy and political self determination'...loosely translated.
"It's a Trojan horse... it's not about saving democracy, it's about weakening fundamental rights in Switzerland," says Andrea Huber.