On 24 September 2015, architect Pernille Vermund and chemical engineer Peter Seier Christensen announced that they were in the process of establishing a new political party with the working title "We Conservatives" (Vi Konservative),[14][15] but instead settled on the name "Nye Borgerlige".

[31] Early in the election period, the party decided against custom to invest most of its funds in communication and not policy development, in a ratio described as "80/20".

[33][34][35] In February 2021, it became, with officially 18,000 members, the Danish political party with the third highest membership count, succeeded only by the Social Democrats and Venstre.

[45][46] At the 2022 general election on 1 November, the party received 3.7% and won six seats as the four original MFs were re-elected in the same constituencies along with Mikkel Bjørn (Funen) and Kim Edberg Andersen (North Jutland).

[50][51] In the aftermath of the election, Vermund faced internal critique for having made a campaign that was too vague and pragmatic, focusing on an excess of key issues and too little on immigration policy.

[55][56] On 10 January 2023, Vermund issued a statement saying that she would step down as leader at the party's next annual conference and would not run for reelection to the Folketing.

[64] A week later, Bjørn left Nye Borgerlige for the Danish People's Party, citing internal dissension with Boje and a lack of belief in his abilities to lead.

[63] In the end, no other candidates entered the race for chairman, ensuring Boje's unanimous election as party leader[68] on 7 February.

[77] As a concomitant of Boje's exit, the party was set to lose 3.5 million Danish kroner of its public funds, with effect after 12 months.

[84] From the local election in November 2021 until March 2023, the party lost 22 out of 64 municipal council members,[85] including all in the four biggest Danish cities (Copenhagen, Aarhus, Aalborg, Odense).

[86] In April, Seier called in sick with stress, effectively reducing Nye Borgerlige's number of active parliamentarians to two.

[d][88][89] On 10 May, Vermund announced a more pragmatic strategy for the party, which included no linger insisting on its three main immigration policy demands as non-negotiable.

[88] On 13 October, Martin Henriksen, a former Danish People's Party MF who had joined Nye Borgerlige in June,[90] was appointed its leading candidate for the 2024 European Parliament election.

[93] On 16 January, the party's parliamentary group was formally dissolved,[94] with Vermund joining the Liberal Alliance the subsequent day,[95] whose chairman Alex Vanopslagh had before Christmas privately invited her to do so.

[3] Although the party supports Danish NATO membership, in November 2023 it expressed opposition to additional funding for Ukraine in the Russo-Ukrainian War, describing Islamic immigration as a greater threat to European security.