Similarly to the state- and prior elections, a list proportional system was used.

Borough elections in Hamburg have a 3% electoral threshold.

Voting privileges were passively awarded, meaning anyone over the age of 16 meeting eligibility requirements was automatically enrolled.

This was due to their party having levied allegations of extremism against them, after it was discovered that these members had contacts to Islamist organizations.

[1][2] On 2 October 2019, members of the faction Greens 2 announced that they would leave the Green party and join the SPD, which became the strongest faction in the borough through this move.