Although Clinton won the state by a nearly identical margin as Obama, the state’s internal politics changed dramatically. Clinton made massive gains in the state’s most college-educated counties, while Trump made massive gains in the rest of the state. Clinton's win in Illinois was largely the result of a lopsided victory in
Cook County, the state's most populous county and home of
Chicago, the city where Clinton was born and raised. Trump, meanwhile, won most of the downstate rural counties by large margins. Many of these counties had voted for
Clinton's husband in both his
1992 and
1996 presidential runs. This is also the first presidential election in history where a Republican managed to win the
White House nationally while failing to carry any of Chicago's
collar counties (winning only
McHenry County). To put in perspective the political turnaround in the region, between the 1854 creation of the
Republican party and
Barack Obama's
2008 election, Democrats only won
any of the collar counties in just five landslide elections. In
1932 and
1936,
Franklin Roosevelt carried
Will County; In
1964,
Lyndon Johnson carried Will and
Lake;
Bill Clinton carried Will in
1992 and added Lake to that in
1996. Illinois, along with Minnesota, was one of the only two Midwestern states not won by Donald Trump. The election marked the first time since
1988 in which Illinois did not vote the same as neighboring Wisconsin, and the first time since 1960 when the Democratic candidate won Illinois, while losing Wisconsin. This is the first time the Republicans have won
Alexander County since
Richard Nixon's
1972 landslide, as well as the first time they have won
Fulton,
Henderson,
Knox,
Mercer, and
Putnam Counties since
Ronald Reagan's
1984 landslide. Whiteside County voted Republican for the first time since 1988. Cook County, the collar counties, and the downstate counties of
Champaign and
McLean were the only ones to swing towards Clinton. Champaign is the home of the
University of Illinois Urbana-Champaign, while McLean is the home of
Illinois State University. Knowing these statistics, if one were to subtract Cook County's total votes from the rest of Illinois, Trump would have won the state with 1,692,728 votes to Clinton's 1,478,783 votes. Had Clinton won the election, she would have become the second president born in Illinois after
Ronald Reagan, although both politicians jump-started their political careers in elected office elsewhere. Reagan served as
Governor of California while Clinton served as a
United States Senator from New York. As of the
2024 election, this is the most recent election where
Kendall County and
McLean County have voted Republican. ==See also==