What Makes Her Stay With Him?

As Elizabeth Edwards becomes the latest political wife to stand by her man in the face of adultery, Good Morning America takes a look at what drives women to stay when wedding vows are broken. And Edwards' conundrum—like that of Silda Wall Spitzer, Hillary Clinton, and an estimated 22% of all women—may be more about power in the marriage as well as a commitment to political dreams.

"It can be a sign of tremendous power. Your husband just came in with their tail between their legs,” says an anthropologist. “You're suddenly often in a time of tremendous power to make all kinds of deals. You've been working for that dream for years and years. There's so much more to the marriage.”