Quit chasing that squirrel. The real, existential, danger for the Democrats lies in the disclosure of who actually initiated the dossier in the first place. The Democrats are going bonkers over the subpoena for Fusion bank records.

The cover story is that it was oppo research by an anonymous Republican campaign. "In September 2015, a wealthy Republican donor who opposed Trump's candidacy in the Republican primary hired Fusion GPS, an American research firm, to do opposition research on Trump. " https://en.wikipedia.org/wiki/Donald_Trump%E2%80%93Russia_dossier#Creation

At that time nobody thought that Trump was a serious candidate. "The first live-broadcast debate occurred on Thursday, August 6, 2015," Trump didn't start to break out until about the third debate. 

What if the dossier was actually commissioned and funded by a government agency. Maybe the FBI. Maybe by the Justice Department.