The GOP nominee is also seeing some of the highest numbers of the campaign in other swing states.
Nikkei 225 index retreats 1.8% to 17,123.23 points at mid-day.
WikiLeaks has released its 25th batch of Podesta emails, which contain around 2,500 emails.
The Guard's cyberprotection unit has been trying to hack the system to check for vulnerabilities.
Nevada Democratic voters continue to outpace Republican voters in early voting.
There are expected to be more write-in votes this year.
Sources say the secretive state will test launch the intermediate-range Musudan missile.
Trump vows to repeal Obamacare and replace it with a free market-based system.
Democrat has had a setback after FBI announced it was reopening its investigation into her emails.
It is well known that Ryan is no fan of the GOP nominee.
Republican cites Wikileaks email that shows Clinton was passed questions by CNN contributor.
Sex scandals left behind as Republican edges ahead following fresh Clinton email controversy.
The Revenant star has made a docufilm about environmental issues called Before The Flood.
A new FEC filing reveals the GOP nominee has disputed a bill by well-regarded pollster Tony Fabrizio.
However, the department did not provide details of the emails or if they are pertinent to Clinton's case.
Newsweek article explores Republican candidate's history with missing emails.
A single percentage point separates two top contenders as 2016 race tightens in national polls.
James Comey said the FBI may have found more controversial emails linked to Hillary Clinton.
The GOP nominee has repeatedly claimed the election is 'rigged' against him.
The manure stunt, which also happened in 2012, took three trucks to remove.
Comey has been criticised after informing Congress the FBI found emails possibly linked to Clinton.
The Democrat nominee has asked the FBI to release all the facts in the case.