The Democrats for a Strong Bulgaria party (DSB), one of the formations in the coalition We Continue the Change-Democratic Bulgaria (PP-DB), has called on National Assembly Speaker Natalia Kiselova to resign. The reason is her appearance in the stands of the Vasil Levski National Stadium, supporting her favorite football team CSKA, while wearing a team jersey featuring the logo of a gambling operator, personalized with her name on the back. The betting company is a main sponsor of the football team.

DSB interpreted her act as legitimizing an addiction that destroys lives and families, and argued that she is "undermining the image of the National Assembly".

Natalia Kiselova herself commented that this was "a shocking way to raise the issue of addictions in the Bulgarian society" and added: "Here comes a bigger question – can we rely solely on gambling sponsorship for sports?"