The CNN data is based on interviews with voters after they cast ballots and not on actual results.
Most polling stations closed at 8 p.m. CT (9 p.m. EDT), although voters in line to were allowed to cast ballots after the official deadline. First results were expected to begin trickling in from around the state soon after the polls closed, although the winner might not be known for hours.
Walker is only the third governor in U.S. history to face a recall from office. He angered Democrats and unions when he championed a law to severely restrict the collective bargaining of unionized state and local government workers. Walker said the changes were necessary to close a large state budget deficit.
(Reporting by Greg McCune; Editing by Jackie Frank)