CHICAGO — Jesse Jackson Jr.'s publicist says the ailing Illinois congressman has voted by absentee ballot.

However, Kevin Lampe says in a statement that Jackson won't hold an election night event next week.

Jackson has been at Minnesota's Mayo Clinic for treatment for bipolar disorder. He recently checked in for the second time and there's been no indication of when he'll return to work.

The Chicago Democrat took medical leave in June and hasn't campaigned beyond a recent robocall to voters. In it, he asked for patience and says he wants to return to work.

Jackson first took office in 1995 and is widely expected to win again Tuesday. He faces two little-known challengers on the Nov. 6 ballot, including a Republican college professor and postal worker running as an independent.

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  • Jesse Jackson Jr.

    FILE - In this March 21, 2010 file photo, Rep. Jesse Jackson, Jr., D-Ill., uses his PDA to photograph demonstrators outside on the U.S. Capitol as the House prepares to vote on health care reform in Washington. When Jackson disappeared on a mysterious medical leave in June 2012, it took weeks for anyone in Washington to notice. Jackson has never lived up to the high expectations on the national stage.

  • Jesse Jackson, Jr.

    FILE - In this Jan. 5, 2011 file photo, Rep. Jesse Jackson, Jr., D-Ill., is pictured before a ceremonial swearing in of the Congressional Black Caucus on Capitol Hill in Washington.

  • Jesse Jackson Jr.

    FILE - In this May 16, 2011 file photo, U.S. Rep. Jesse Jackson Jr. attends ceremonies for Chicago Mayor-elect Rahm Emanuel in Chicago. (AP Photo/Charles Rex Arbogast, File)

  • Jesse Jackson Jr.

    FILE - In this Tuesday, March 20, 2012 file photo, U.S. Rep. Jesse Jackson Jr., D-Ill., thanks supporters at his election night party in Chicago. Jackson's office announced Monday, June 25, 2012 in a news release that the congressman has been on a medical leave of absence since June 10 and is being treated for exhaustion. (AP Photo/M. Spencer Green, File)

  • Jesse Jackson Jr., Sandi Jackson

    U.S. Rep. Jesse Jackson Jr., D-Ill., and his wife Chicago Alderman Sandi Jackson, thank family members at his election night party Tuesday, March 20, 2012, in Chicago after his Democratic primary win over challenger, former Rep. Debbie Halvorson, in the Illinois' 2nd District. (AP Photo/M. Spencer Green)

  • Jesse Jackson Jr., Sandi Jackson

    U.S. Rep. Jesse Jackson Jr., D-Ill., and his wife Chicago Alderman Sandi Jackson, embrace at his election night party Tuesday, March 20, 2012, in Chicago after his Democratic primary win over challenger, former Rep. Debbie Halvorson, in the Illinois' 2nd District. (AP Photo/M. Spencer Green)

  • Timothy Geithner, Jesse Jackson Jr.

    Treasury Secretary Timothy Geithner, right, declines an offer by U.S. Rep Jesse Jackson Jr., D-Ill., to talk to reporters during a tour of the Ford Motor Company Stamping Plant in Chicago Heights, Ill., Wednesday, April 4, 2012. (AP Photo/Charles Rex Arbogast)

  • U.S. Rep. Jesse Jackson Jr., Sandi Jackson

    U.S. Rep. Jesse Jackson Jr. and his wife, Chicago Alderman Sandi Jackson, ask each other for their support and votes as they arrive at a polling station for early voting, Friday, March 9, 2012, in Chicago. (AP Photo/M. Spencer Green)