For whatever reason, Wikileaks and Julian Assange appear to have a serious problem with the candidacy of Hillary Clinton. This is why they have chosen to release so many potentially embarrassing emails so close to election day. Whether they actually made a difference is still to be seen, but it is certain that Wikileaks tried to turn support away from Clinton.
Yes, the WikiLeaks founder interfered in the upcoming U.S. election, but it is too late for him to have much of an influence. He tried to give Donald Trump a boost by only releasing Clinton's emails, but early voting has already started in many states. He doesn't have enough material.
No, I do not believe that the WikiLeaks founder interfered with the upcoming U.S. election. The information he released about Clinton should be made public so that it is known what a criminal she really is. Unfortunately, most major news stations won't portray Clinton in a negative light so these stores aren't even shown to the general public.
The WikiLeaks founder contends that WikiLeaks is neutral and is, if anything, anti-power and does not favor either Trump or Clinton as candidates for president of the U.S. Releasing Clinton emails serves to inform the American people of the nature and content of communications by Clinton and her staff members in light of the fact that she denied any wrong-doing over a period of years. The emails are unrelated to Clinton's bid for POTUS as are the controlled releases of those emails.