[1] UD was founded on 11 September 2007 by two dissenting members of Democracy is Freedom – The Daisy (DL) who were opposed to the foundation of the Democratic Party (PD).

On 27 November 2007 UD formed a joint group in the Senate with Liberal Democrats of Lamberto Dini.

[2] The convergence between the two small parties, which retained their autonomy, is based on some key points (a plurality voting system, more powers for the prime minister, fiscal conservatism, tax cuts and social security reform) and was open to all the senators.

For technical reasons, the two parties formed separate groups in the Senate in order to have more speaking time, whilst coordinating almost every position together and formed a joint group until the Liberal Democrats decided to withdraw support from Romano Prodi's government and to join The People of Freedom.

In the 2008 general election, Democratic Union for Consumers failed to gain enough votes to enter Parliament.