Swiss voters head to polls to decide on stricter neutrality rules

Swiss voters are heading to the polls Sunday to decide whether the country's centuries-old neutrality policy should be subject to stricter constitutional rules.

The initiative "Safeguard Swiss neutrality" would enshrine "perpetual and armed" neutrality in the Constitution, restrict cooperation with military alliances and generally prohibit sanctions against warring states unless mandated by the UN.

The latest SRG survey showed 63% opposed to the initiative and 34% in favor, with intended voter turnout at 49%.

The Federal Council and parliament opposed the initiative, arguing that it would restrict Switzerland's room for maneuver in protecting its security, independence and prosperity.

Supporters argued that constitutional safeguards were needed to protect the country's neutrality from external pressure and preserve its credibility as a mediator and provider of good offices.

For a constitutional initiative to pass, it must secure a majority of both voters nationwide and Switzerland's cantons.

Preliminary results are expected from noon, with results updated throughout the afternoon.

Voters will also decide on the "Safe Food" initiative, which seeks to strengthen sustainable domestic production, promote more plant-based food and protect clean drinking water.