Trump was elected by both those citizens who voted for him and those who didn't vote for Hillary Clinton. Not Russia.
And here's another:
WE are Russia's big enemy and big targets. Not Republicans. Electing Democrats was OUR job. WE lost not just the presidency but the senate, possibly the house, and many state governments because too many of US failed.
Ignorance and other personal weaknesses are what Russia exploits. And they're big experts on identifying and exploiting personal weaknesses. Knowledge and adequate standards for our own behavior are the weapons that defeat them.