I think the dems have moved past the "Russia interfered with the election" narrative, which was always contrived and driven by dismay that Hilary lost the election. They're talking about how certain emails and information got leaked to Wikileaks. There will need to be something else in the report.
As for collusion, we collude all the time with Israel, Saudi Arabia, Mexico, Canada, Europe and even China. The word collusion itself doesn't mean anything. The question is whether US interests were really betrayed somehow, you know, like selling Uranium under the table or taking donations to the Clinton Foundation from nefarious characters in a pay-to-play scheme.