John P. Daley is the 11th Ward Democratic Committeeman in Chicago, Illinois, a member of the Cook County Board of Commissioners, and the Chair of the Cook County Board Finance Committee. He has previously served in both the Illinois State Senate and the Illinois House of Representatives, as well as being employed as a school teacher. He is the son of former Chicago Mayor Richard J. Daley and brother of former Mayor Richard M. Daley, as well as William M. Daley, former White House Chief of Staff under President Obama and United States Secretary of Commerce under President Bill Clinton. Unlike his brothers, he continues to live in the neighborhood the family was raised in.

The Cook County Board of Commissioners is a legislative body made up of 17 commissioners who are elected by district, and a president who is elected county-wide, all for four-year terms. Cook County, which includes the City of Chicago, is the United States' second-largest county with a population of 5.2 million residents. The county board sets policy and laws for the county regarding property, public health services, public safety, and maintenance of county highways. It is presided over by its president and the county's chief executive, currently Toni Preckwinkle.