The domain of Calvinism is indeed far broader than the narrow confessional interpretation would lead us to suppose.
Quotes
The other parties campaign for parliamentary seats, more or less. We campaign for our principles!
Lutheranism restricted itself to an exclusively ecclesiastical and theological character, while Calvinism put its impress in and outside the church upon every aspect of human life.
Calvinism is an all-embracing system of principles... It is rooted in a form of religion which was peculiarly its own, and form that specific religious consciousness there was developed first a particular theology, then…
The question is not if the candidate's heart is favorable to Christianity, but if he has Christ as his starting point even for politics, and will speak out His name!