Filing for the Illinois primaries closed on January 5. For president in the Republican primary, the only candidates who filed are Ryan Binkley, Chris Christie, Ron DeSantis, Nikki Haley, and Donald Trump. Candidates need 3,000 signatures. Vivek Ramaswamy did not file.
Democrats who filed are Joe Biden, Frankie Lozada, Dean Phillips, and Marianne Williamson.
No presidential petition was challenged except for Trump’s petition. Objectors do not challenge the number of signatures he filed. But they challenge him because he did not sign the loyalty oath, which says that candidates are not affiliated with a Communist organization and that they will not work to overthrown the government. That oath has been declared unconstitutional many times in the past but it remains in the Illinois election code.