Robert Mercer and Rebekah Mercer were big in the 2016 election. They started out as Cruz supporters, but switched to Trump after Trump visited them, KAC and Bannon came over from them at that time, I believe. Before, but close to the convention. They were the party Cruz wanted to visit after Cruz trashed Trump in the convention speech, but was told in no uncertain terms to go fuck himself.
Had Cambridge (UK univ) Analytica control at that time. Know some people from Oxford (statistics) who told me it was amazing shit.
My guess is the Mercers know everything. They have the data backing up C. Herridge.