Washington - Elizabeth Edwards, a best-selling author and the estranged wife of former Democratic vice-presidential nominee John Edwards, who endured revelations about her husband's infidelity, died on Tuesday at age 61.
Edwards died of cancer at her home on Tuesday morning, US media reports said.
Edwards was first diagnosed with breast cancer and treated in 2004.
In 2007, the cancer returned and spread to other parts of her body.
She wrote two best-selling books, Resilience and Saving Graces,' about her long battle with cancer and the scandal surrounding her husband, a wealthy trial lawyer who served as a US senator from North Carolina and twice ran for president. - Reuters