The 2008 Illinois Republican presidential primary was held on February 5, 2008. Illinois was one of 24 States holding a primary or caucus on Super Tuesday, 2008. Delegates from each of Illinois' 19 congressional districts are selected by direct election. In addition, the primary ballot also contains a preference poll that lists the presidential candidates. 10 at-large delegates and 3 party leader delegates were elected at the State Convention and officially went to the Republican Convention unpledged.
*Candidate withdrew prior to the primary