The only so called hard evidence we have is the Intelligence agencies saying, we believe the Russian government may be involved in hacking email accounts and possibly releasing the information. The CIA assumes that the Russian government was trying to support Trump's campaign for president. The CIA is the only agency to make the assumption. There is no evidence that there was any hacking/interference with the voting machines or the election systems in any way. This was stated by the administration and admitted by the Hillary campaign and other election experts.

What we are talking about is not that the actual election systems were impacted but that the Russian government may have hacked the DNC and John Podesta's email accounts and released actual emails containing factual information. This may have been to sway public opinion. The same desire of every political ad on television by both campaigns. There is no hard evidence that Russia is directly involved.