Ben Carson said Sunday that his campaign is in a “different ball game,” days after the stunning resignation of three high-ranking members of the retired neurosurgeon’s campaign staff.

In an interview with ABC on Sunday, Carson cast the departures of those aides — campaign manager Barry Bennett, communications director Doug Watts, and deputy campaign manager Lisa Coen — as a shakeup that reflects the growing pains of a presidential bid that has exceeded expectations.

Read the article “Ben Carson Addresses the Turmoil that has Roiled His Campaign” on businessinsider.com.