Elizabeth Edwards, the wife of former Democratic Senator John Edwards, has died after a six-year battle with cancer. Edwards was first diagnosed with breast cancer in the final weeks of the 2004 campaign as her husband ran as John Kerry’s vice-presidential nominee. After undergoing treatment, the cancer returned in 2007 and was deemed inoperable. Since then, Edwards was also forced to confront the public disclosure of her husband’s infidelity and fathering of a child with a campaign videographer. In a statement, President Obama called Elizabeth Edwards “a tenacious advocate for fixing our healthcare system and fighting poverty. Our country has benefited from the voice she gave to the cause of building a society that lifts up all those left behind.”