Illinois
Most of Illinois outside of Chicago (its most populous city) is heavily conservative. In 2016, for example, nearly 40 counties in Illinois gave Trump 70% or more of the vote there. However, Chicago makes up over half of the state´s population, and Cook County (in which Chicago is located) gave Trump just 21% of the vote there. Therefore, the governor of Illinois is currently a Democrat, as are both its US Senators and over 70% of its representatives. In 2016, Hillary Clinton won the state by 17%. In 2012, Barack Obama won the state by 17%. In 2008, Obama won the state by over 25%. Illinois has supported only Democratic candidates for president since 1992.