The Senate must immediately send these articles back to the House. No vote necessary. The hearings in the House were done improperly and therefore are unconstitutional. The Senate cannot hold inquiries or even vote one way or another.
I think a much better idea is to use the rule of evidence currently in place by US courts. That will get rid of 99% of the Bull squeeze underpinnings of the current impeachment. There will simply be no case. Nadler and Schiff will whine like newly weaned puppies but not be near so cute! Trump gets exonerated!