In 2014 - Russia hacked the Ukrainian Presidential election with malware

"In 2014, during the presidential election in Ukraine, attackers linked to Russia sabotaged the country’s vote-counting infrastructure and, according to published reports, Ukrainian officials succeeded only at the last minute in defusing vote-stealing malware that was primed to cause the wrong winner to be announced. Russia is not the only country with the ability to pull off such an attack on American systems — most of the world’s military powers now have sophisticated cyberwarfare capabilities."

https://www.verifiedvoting.org/

Not much to wonder about here...our Homeland Security officials tried to alert some states:

October 7, 2016:
http://www.thedailybeast.com/articles/2016/10/07/russia-s-senior-most-officials-ordered-dnc-hack.html

"Officials also said they had detected Russian attempts to target state and local-level elections systems.

“We also worked as quickly as possible to release as much information as possible in order to provide state and local officials sufficient time to fortify their infrastructure,” the official said. The Department of Homeland Security and the FBI have put state elections officials on notice that hackers have been trying to access voter registration files and could cause havoc on Election Day. So far, 25 states have asked the department to help scan their computer networks for security weaknesses."