Patti Solis Doyle, campaign manager for Hillary Clinton, is in the fight of her life.

Doyle, whose ties to Clinton go back to 1991, when she was hired as Clinton’s scheduler, has five days to turn the tide. After a solid defeat in Iowa, the New Hampshire primary is a crucial event for a candidate who was once considered a Democratic shoo-in.

This is Doyle’s first national campaign. Although she prefers to stay behind the scenes, she is known as a fiercely competitive person who runs a tight, well-organized operation. She has described herself as “tough as dirt.”