But, Germany's decision after Fukushima to close down all nuclear reactors has had a strong impact on the 2017 votation that banned nuclear in Switzerland. So I guess the influence is there.
People aren't really partisan like that in Switzerland. They'll happily elect people from one party then vote against the party on specific issues in referendums or initiatives.
For something like nuclear, people who vote for green party might be mostly aligned with the party because it's a key issue for them while people who vote for center or right parties won't really care what the party recommends.
I'd expect the strong anti movement from Germany to have some impact.
Unless you personally agree with whatever your preferred party's line is on everything and generalize that sentiment, I'm not sure how to get to that conclusion.
I don’t know why we put people in political buckets. It’s good to disagree. I am probably the weird guy but so be it.
Of course people make jokes and remarks about "those people" who speak a different language. But "those people" are probably 1h away by train, are probably coworkers, and their language was taught in your school (even if some didn't bother to learn).
We also have a few language specific medias (German: NZZ, Tagesanzeiger, Blick, ..., French: Le Temps, 24 heures, La Liberté, ...), but I think most people consume Swiss media, especially when Swiss politics and local afairs are absolutely not covered by French and German medias.
It gives the strange feeling that although they decided to create a country together they don't want to interact with each others unless absolutely necessary.
It's just harder to speak in another language than to understand it, so if you ask someone to speak...
Next time, ask them if they understand French :-).