Where the petitioners seeking relief from judgment under Section 2-1401 of the Code of Civil Procedure cannot demonstrate due diligence in presenting their meritorious claim to the court in the original action, their petition lacks an essential requirement for vacating the judgment.The 1st District Appellate Court affirmed the decision of Cook County Circuit Judge John C. Griffin.Richard and Meryl Cannon resided — along with their 43 horses — on a farm owned by Horizon Farms Inc. In 2006, Horizon Farms decided …