United States presidential election in Illinois, 2020

The 2020 United States presidential election in Illinois took place on November 3, 2020, as part of the 2020 United States presidential election. Illinois voters chose 20 representatives, or electors to the Electoral College, who then voted for President and Vice President.

Illinois voted overwhelmingly for incumbent President William C. Holland (D-Texas), over the Republican nominee, Senator John Dickenson (R-Mississippi). Holland carried Illinois with 70.50% of the popular vote to Dickenson's 29.50%, a victory margin of 41.00%. Thus, even in the midst of a massive nationwide Democratic landslide, Illinois weighed in as 7.40% more Democratic than the national average. Holland broke 60% in 41 counties, including the populous Chicago suburban counties of Will, Lake, DePage, and Kane, 70% in 4 counties, and 80% in Cook County, the most populous county in the state and home to its largest city of Chicago. He became the first presidential candidate to ever receive more than 80% in Cook County. Holland also won Ford, Edgar, Cumberland, and Lawrence Counties with pluralities of the vote cast, becoming the first Democrat to win Ford County since Franklin Roosevelt in 1932. Overall, Holland won 92 of Illinois's 102 counties.