It is also not a period free of controversy, since a system like this was only possible with the help of the Ministry of the Interior which is traditionally in charge of supervising the electoral processes and which, at that time, was the one in charge to put in agreement to the political forces to agree the result of the elections. Nevertheless, this system gave the necessary stability to the country between 1875 and 1903. However, this system soon entered into a crisis with the internal fights between parties, the incipient dissolution of these and the appearance of new ones, such as the Spanish Socialist Workers' Party in 1879.