Will there be a secret ballot? IINM it would take 10 senators to force it not to be secret, which is very likely not to happen.
A secret ballot will likely mean conviction (Liz Cheney won the secret vote), but an open ballot gives Trump much better odds of acquittal.
So the question is if the Dem leaders prefer to satisfy their base and remove the threat of a future run by holding a secret ballot vote, or they prefer to divide (& conquer) the GOP by putting it to open ballot and letting the GOP voters fight with each other and leave the door open for Trump to destroy the party with future runs/Patriot party.