Mary McDonald is a prominent politician in Ireland, known for her role as the leader of Sinn Féin, a political party that advocates for Irish reunification and social justice. She has been a member of the Dáil Éireann, the lower house of the Oireachtas, since 2011, representing the Dublin Central constituency. Throughout her career, McDonald has focused on issues such as healthcare, housing, and equality. She has been a vocal advocate for policies aimed at improving the lives of ordinary citizens and has played a significant role in shaping the party's direction in recent years.