Nearly four years after his affair with an Argentine woman was exposed, former South Carolina Gov. Mark Sanford plans to announce his return to politics and run for his old congressional seat.

His spokesman Joel Sawyer confirmed to The Associated Press that the 52-year-old Sanford would announce his bid on Wednesday. The ex-Republican governor said last month that reports he was planning a political comeback were accurate and he was in Charleston last week looking for office space for his campaign.

The National Review Online on Tuesday first reported the announcement.