Public sector unions play a critical role in political advocacy by representing the interests of workers in negotiations with government entities. They engage in collective bargaining for better wages, benefits, and working conditions, thereby influencing government policy and spending priorities. Through lobbying and political contributions, these unions advocate for legislation that supports public services and employee rights. Their mobilization power can significantly impact elections, as they often endorse candidates who align with their interests. Therefore, public sector unions not only protect their members' interests but also shape broader political landscapes.