ABC News projects Joe Biden will win in Illinois.
Voters in Illinois head to the polls Tuesday, which are open from 6 a.m. to 7 p.m. CT.
The Land of Lincoln logged more than 2.3 million mail ballot requests this year. There are 20 electoral votes at stake.
Illinois is a modern Democratic stronghold that hasn't elected a Republican for president since George H.W. Bush in 1988.
Incumbent Sen. Dick Durbin, the Democratic whip, is favored to win a fifth term against four challengers. Similar to other conservative-leaning rural and suburban swaths of the midwest, a cluster of U.S. House seats across downstate Illinois have been Republican-held for decades, but Democrats have a chance to flip a seat in the competitive 13th Congressional District race.
*Counties are colored red or blue when the % expected vote reporting reaches a set threshold. This threshold varies by state and is based on patterns of past vote reporting and expectations about how the vote will report this year.