The Democracy and Solidarity Party has its origins in the autumn of 2015 according to the party's website, which claims that Demos arose "in response to the need to organize the progressive forces, articulating a strong critique of the underdevelopment, inequality and division of the Romanian society".

[5] In the 2019 European elections, the party had initially planned to send 21 candidates, but only 16 showed up.

[6] As a result, the party used intra-party deliberation to select a final shortlist of 12 candidates.

[6] On 24 September 2024, DEMOS, NOW and REPER announced an electoral alliance to contest the 2024 Romanian legislative election, the Platform for Democracy, Prosperity, and Progress.

[9] It promotes elements such as equal opportunity and poverty reduction and condemns the injustice and the economic and social inequality that it claims to be present in the Romanian society.