[4] Talks about a possible alliance of the two parties started in 2016,[5] with the intention of participating in the 2017 legislative election,[6] and becoming the "third power" of Czech politics.

[8] On 12 April 2017, KDU-ČSL leader Pavel Bělobrádek was announced as the alliance's candidate for Prime Minister.

[4] An electoral alliance of political parties requires 10% of votes to enter the Chamber of Deputies, and following opinion polls showing Populars and Mayors to be under the 10% threshold, some media reported that KDU–ČSL were planning to disband the alliance and offer STAN candidates places on their ballot list.

[13] On 18 July 2017, the KDU-ČSL leadership met to discuss the matter, and voted to leave the alliance.

Petr Gazdík, leader of Mayors and Independents, stated that the triangle represents the idea that decision making should start in families and municipalities in a well-functioning society.