Vague as it was, the news prompted celebration from Republicans.
The New York Times reported that the emails were discovered after the FBI seized the personal devices of Clinton aide Huma Abedin and her estranged husband Anthony Weiner, the disgraced former congressman best known for his multiple sexting scandals.
Clinton did not mention the issue in a Friday rally. President Barack Obama was set to address a rally later in the day in Florida, one of multiple stops he has planned in the final days of the campaign, with polls showing Democrats leading nationally and in almost every major swing state.
The scandal-plagued Liberals had been leading in the polls. Despite being battered by controversies over corruption in federal advertising, and the insider-trading allegations related to a tax-policy announcement, they entered the winter break in first place. They lost about five percentage points within days, fell into second place, never recovered, and spent 10 years in opposition.