In 1878 the liberal parties lost enough votes to lose the majority in the parliament which they had defended in the general election just one year before. In this article, the questions of where the voters came from and why the voting changed so crucially within one year are reexamined. The analysis uses a new set of data and makes use of King's algorithm, a tool provided by modern political science. The main finding of this article is that the change towards protectionism was not caused by new, but by floating voters from the agricultural sector.