[3] Cahyadi was selected over fellow PDI-P member and Risma's deputy Whisnu Sakti Buana.

[6] Arifin's running mate was Mujiaman, formerly president director of the municipal water company.

[8][9] In terms of reported campaign donations, the Eri-Armudji ticket received Rp 1.8 billion, while the Machfud-Mujiaman ticket received Rp 7.3 billion.

[10] On 1 December 2020, the Surabaya branch of PDI-P filed a report against the Machfud-Mujiaman campaign team for using Rismaharini's imagery in campaigning material while she had declared her support for the Eri-Armudji ticket.

[11] A number of survey organizations conducted opinion polls regarding the mayoral election, with differing results.