Stephanie Cutter, one of President Obama’s top White House advisers, will be leaving her post before the end of the year to assume a new role as deputy campaign manager of Obama for America in Chicago, a campaign official told ABC News.

Cutter, a veteran communications manager who helped shape the administration’s 2009 strategy for health care reform, will work closely with campaign manager Jim Messina to oversee communications, messaging, policy and research through 2012.

The high-profile departure comes as Obama’s advisory team fills more top staff posts and expands state-by-state operations in anticipation of an accelerating campaign early next year.

During the 2008 campaign, Cutter served as chief of staff for Michelle Obama.