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Rule 23 Criminal Criminal Procedure 5th District

People v. Connor

Court IL Appellate, 5th District
Filed Friday, March 6, 2026
Citation 2026 IL App (5th) 240639

Key Takeaways

  • 1 Defendant waived medication-based plea challenge by failing to file timely motion to withdraw guilty plea.
  • 2 Voluntary guilty plea waives all non-jurisdictional errors, including constitutional claims arising before sentencing.

Summary

Manolito Conner appealed the Macon County Circuit Court's dismissal of his pro se postconviction petition challenging his November 2022 guilty plea to attempted first degree murder. Conner alleged his guilty plea was involuntary due to the effects of his medications, but did not file a direct appeal, motion to withdraw his plea, or any postplea motion raising this claim. The trial court dismissed the petition as frivolous and patently without merit on February 22, 2024.

The Fifth District Appellate Court affirmed the dismissal on two independent grounds. First, under Illinois Supreme Court Rule 604(d), Conner was required to file a timely motion to withdraw his plea to challenge any aspect of it, including constitutional claims arising before the plea. His failure to do so constituted waiver. Second, a voluntary guilty plea waives all non-jurisdictional errors or irregularities, including constitutional ones. The court reasoned that plea agreements function as contracts subject to waiver principles. Because Conner failed to raise the medication claim in any postplea motion, the trial court never had the opportunity to address potential errors, and appellate review was precluded.

This decision reinforces that defendants must raise plea-related challenges through proper procedural mechanisms—specifically timely motions to withdraw or postplea motions—or risk permanent waiver of those claims in collateral proceedings.

Key Holdings

1. A defendant waives a constitutional claim that medications rendered a guilty plea involuntary by failing to file a timely motion to withdraw the plea under Illinois Supreme Court Rule 604(d).

2. A voluntary guilty plea waives all non-jurisdictional errors and irregularities, including constitutional claims, to which waiver principles apply.

3. Failure to raise a plea-related claim in a postplea motion precludes appellate review because the trial court never had opportunity to address and correct the error.

4. Postconviction petitions challenging guilty pleas on grounds not raised in timely postplea motions are properly dismissed as frivolous or patently without merit.