Don’t misunderstand. A majority is not removal. That takes 2/3.
The Rats desperately want the majority so they have the optic that “a bipartisan Majority of the Senate voted to convict” the President. The treasonous Mitt only needs 4 to give the rats a club to beat on Trump with throughout the 20 campaign.
I would be very surprised if any GOP Senators vote to convict. It’s too damaging to GOP morale and likely to cause ticket splitting. Obviously, the useless GOP Senators on the ballot in 2020 don’t want Trump voters splitting their ticket in a protest vote.