In addition to constitutional powers, governors also have a considerable degree of statutory authority. Most of the authority exercised by governors on a daily basis is derived from statute, giving the General Assembly a great degree of power to expand or contract the governor's authority. Historically, the party in control of the General Assembly would reassign control of agencies from the governor or to the governor based his party affiliation, and the party affiliation of the cabinet heads, which at times has left the governor with no direct control over state agencies.