[3] He left the office when he was elected chairman of the Bohemian-Moravian Confederation of Trade Unions (ČMKOS).

[7] On 1 May 2022, the ČSSD youth organization, the Young Social Democrats, began collecting signatures for his candidacy.

Four days later, he accepted the candidacy and announced it on his Twitter account, reiterating that he wanted to be a civic candidate.

[9] Josef Středula was criticized by Czech journalist Lukáš Valenta over his use of a trade union demonstration as part of his campaign.

[10] On 4 March 2024, Středula was dismissed as chairman of ČMKOS due to unpaid union membership fees.