FILE - In this Aug. 25, 2015, file photo, Republican presidential candidate Donald Trump, right, walks with his campaign manager Corey Lewandowski after speaking at a news conference in Dubuque, Iowa. A Florida prosecutor's office plans to hold a news conference Thursday, April 14, 2016, amid reports that presidential candidate Donald Trump's campaign manager Lewandowski won't be prosecuted over a videotaped altercation with a female reporter. (AP Photo/Charlie Neibergall, File)

Trump campaign manager is out

Corey Lewandowski is leaving the campaign following a tumultuous stretch marked by missteps and infighting.