The party was founded by who had previously been member of the liberal after his own had merged into that. It entered in the , who held a personality-based campaign around the milk industrial and anti-toll campaigner Floris Tas. The Middle Party was able to win one seat in .
The party played a marginal role in parliament. Vos came into conflict with Staalman over his support for a law on mandatory closing times for shops. The party consequently fell apart in parties around Staalman and Vos, who fought legal battles over the ownership of the party's name.
Neither party entered in the .
The party wanted to increase public wealth by reducing the restrictions for trade, industry and agriculture. The most important issues of the Middle Party were the abolition of trade restriction, especially , and several levies.
The party wanted to reduce government expenditure by reducing the number of and the replacement of by programs.
In this table the election results of the Middle Party in Tweede Kamer and Eerste Kamer is represented, as well as the party's political leadership: the fractievoorzitter, is the chair of the parliamentary party and the lijsttrekker is the party's top candidate in the general election, these posts are normally taken by the party's leader.
