This district guards the northern frontier of Chicago's suburbs. Its lands stretch across Cook, Lake, and McHenry Counties, embracing Waukegan, North Chicago, Highland Park, Lake Forest, Buffalo Grove, and parts of Arlington Heights.

The Tenth is a realm shaped by changing borders. As the people of Chicagoland grew and spread, each great redrawing of the map reshaped its domain. Today, it unites prosperous suburbs, hardworking neighborhoods, and diverse communities beneath a single banner.

Long ago, the district stood as a Republican fortress. But as the years passed, the balance of power shifted, and the Tenth came to favor the Democratic faction.

Many great industries prosper within its borders. Mighty workshops, centers of finance, and halls of healing all contribute to the district's wealth and strength. The struggle for the district has often been fiercely contested. Republican Mark Kirk defended these lands for many years before departing in 2010 to claim a seat in the United States Senate. In 2012, Democrat Brad Schneider seized the district, only to lose it two years later to Republican Bob Dold. Yet the battle was not over. In 2016, Schneider reclaimed the seat and has remained its champion ever since, dedicating his efforts to healthcare, environmental protection, and economic growth.

The Tenth bears a Cook Partisan Voting Index of D+11, marking it as a district that leans toward the Democratic faction. Its people come from many backgrounds, with a large White population joined by growing Hispanic, Asian, and Black communities. The realm is prosperous, with a median household income above the national average. Its citizens are also renowned for their learning, as many have completed the highest levels of education. Together, these strengths have made the Tenth one of Illinois' most influential districts.