Illinois Primary History
Presidential primary election results from 2008 to 2024
2024
GOP Primary
Donald Trump80.2%
Nikki Haley14.4%
2020
Dem Primary
Joe Biden58.8%
Bernie Sanders36.1%
2016
GOP Primary
Uncontested
Dem Primary
Hillary Clinton50.6%
Bernie Sanders48.6%
2008
Dem Primary
Barack Obama64.7%
Hillary Clinton32.8%