I can't believe this narrative is still repeated. "influence" can mean almost anything. In the headliner 2016 story, it meant a few based Russian organizations bought several million dollars of targeted Facebook ads. That's what broke democracy I guess.
In Assange's case it means he released existing emails which reflected negatively on a candidate. In that past most of his released material has negatively reflected on republicans.
The US has an interest in, and is "influencing" foreign election 24/7 365.