"In 1991 following a decision by the Federal Supreme Court of Switzerland, Appenzell Innerrhoden (AI) became the last Swiss canton to grant women the vote on local issues."
Notice how it was a court decision, not a result of the political process. I'd say 1991 is a bit too late to have full voting rights for women.
https://en.wikipedia.org/wiki/Women%27s_suffrage_in_Switzerl...