European Union
Swiss Senate reshapes the EU deal before a national vote
The Council of States has broadly backed the new Switzerland-EU treaty package while seeking changes on referendums and immigration.

After roughly 24 hours of debate, the Council of States has given Bilaterals III a broad vote of confidence, while rewriting important parts of the route to a national ballot. The upper house has backed most of the new Switzerland-EU treaty package, yet its amendments show that Parliament intends to shape the agreement before Swiss voters see it.
The package covers the next phase of Switzerland’s relationship with the European Union, including market access, free movement, transport, electricity and rules governing state aid. It is also designed to create a more stable system for updating bilateral agreements and resolving disputes. The negotiations followed the collapse of an earlier institutional framework agreement in 2021.
The scale of the undertaking was visible in Bern. The package extends to 2,228 pages, and the Senate’s 46 members spent more than five hours on the first day alone. Foreign Minister Ignazio Cassis argued that Switzerland needs reliable access to European markets to preserve its economic influence. “Little Switzerland ranks among the world’s 20 largest economies,” he told senators. “But to retain that strength, we need markets.”
The Senate’s decision moves the debate into a more consequential phase. Its approval is not the final parliamentary verdict, and the amendments may still change in the National Council.
Senators Raise the Referendum Threshold
The Council of States wants the EU package to face a mandatory referendum, raising the constitutional stakes before the vote is even scheduled. Under the Senate’s position, the agreement would need a majority of voters across Switzerland and a majority of the cantons. The Federal Council had favoured an optional referendum, which would require only a nationwide majority.
Senators supported both legislation requiring the mandatory vote and a separate constitutional amendment. That creates a further parliamentary task and gives the referendum question a distinctly Swiss dimension. Cantonal approval would become decisive, meaning the package could fail even if it won more votes nationally.
The timing remains unsettled. The National Council, Parliament’s larger chamber, is expected to examine the package during the winter session. The Council of States has also not completed its work on the electricity agreement, one of the package’s central components. Senators are due to begin considering that agreement in December.
The process will determine whether the treaty package reaches voters as one political proposition or through a framework shaped by several parliamentary amendments. The Local reported that many practical questions remain open, including when the public vote will take place. For now, the Senate has made the approval threshold clear while leaving the calendar unresolved.