Mrs Clinton, who was set to campaign across OH on Monday, vowed over the weekend that she would not be "knocked off course" in the election's final days by the discovery of new emails in an unrelated sexting investigation.
The FBI said on Friday that it had found thousands of emails, during an unrelated investigation, that may be "pertinent" to its review of Clinton's use of a private server from 2009 to 2013.
The FBI is now investigating new emails that may be linked to its probe into Mrs Clinton's private email server.
CNN dropped former analyst Donna Brazile after WikiLeaks revealed she had leaked a question from one of the debates in the Democratic primary to the Clinton campaign. Weiner is under investigation for allegedly sending explicit images to an underage girl.
Supported by a large array of commentators and legal experts, many of them Republicans, the Clinton campaign has called into the question the timing of the Federal Bureau of Investigation disclosure about the probe that came 11 days ahead of the polling date. Senate leader Harry Reid charged that Comey had "explosive information" about "coordination" between Donald Trump and "the Russian government". "And I wouldn't be supporting her if I didn't have absolute confidence in her integrity and her interest in making sure that young people have a better future". "The FBI agents say their investigation is likely to yield an indictment".
Olesen holds nerve to triumph in Turkey
I didn't score that well, but I felt like I was playing a lot better, so I was hoping for something good to come. Having dominated the Turkish Open this week, Thorbjorn Olesen rounded off a deserved win on Sunday.
Hillary Clinton's team has slammed FBI Director James Comey for what it's labelled a "very clear and extremely troubling double standard" over the latest inquiry into her email use. "I do not believe that he is in any way trying to influence the election one way or another".
The Justice Department originally was opposed to the FBI's plan to notify Congress about the discovery of the new emails, according to senior officials familiar with the discussions.
Longstanding Justice Department protocol discourages investigative actions in the run-up to an election that could be seen as affecting the electoral process.
The former first lady and top diplomat appears to lead Trump both nationally and in enough battleground states to secure the presidency on Tuesday - but recent polls show her margins both nationally and in some of those key states shrinking. But he recommended against criminal prosecution, saying there was no evidence that Clinton and her team had intentionally mishandled the information.
The email controversy has dogged Clinton for much of the campaign, with Republican presidential nominee Donald Trump seeking to hold the issue up as an example of his rival's untrustworthiness.