Why do victorious candidates sometimes claim a mandate?

Victorious candidates often claim a mandate to assert that their election results reflect strong public support for their policies and vision, legitimizing their authority to implement them. This concept enhances their political capital and can rally both supporters and undecided voters around their agenda. Additionally, claiming a mandate can help to counter opposition and strengthen their position in negotiations or legislative battles. Ultimately, it serves as a tool to reinforce their leadership and justify their actions in office.