The American Center Party is on the Illinois ballot for U.S. Senate. Its nominee for that office is Whitfield Harrington, Jr. If he polls 5%, his party will be ballot-qualified for statewide office in 2028. Here is the website.
This is the first time a party organized in just Illinois has appeared on a statewide ballot in Illinois since 1986, when Adlai E. Stevenson III created the Illinois Solidarity Party.