Hillary Clinton on Tuesday declared herself "shocked" by the escalating allegations of sexual misconduct by Hollywood mogul Harvey Weinstein, a longtime Democratic Party donor.

"I was shocked and appalled by the revelations about Harvey Weinstein," the Democratic former presidential hopeful said in a statement.

"The behavior described by women coming forward can not be tolerated," she added. "Their courage and the support of others is critical in helping to stop this kind of behavior."