Because that interview is not about Trump or US domestic politics( it's about Ukraine war), the interviewer didn't ask who told him and didnt dig more about it.
They have plans we don't know. Of course the best outcome for them is beating Trump in conventional way: call victory at 11:00pm. If not, early morning ballot dump. If not, there are still 2 months before making the election result official. They invested too much to stop Trump. No way they will let Trump become next president.
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