Washington Post reports:
An aide to Sen. Mitt Romney (R-Utah) said that he will vote later Friday for a motion to hear from witnesses in the Senate trial.
For days, Romney has said publicly that he would like to hear in particular from Bolton, who reportedly says in a new book manuscript that Trump directly tied military assistance to Ukraine to investigations of the Bidens.
The Romney aide spoke on the condition of anonymity because they were not authorized to speak publicly.
Democrats have been trying to court at least four Republicans to vote to hear more evidence. Even with Romney on board, they still appear to be short of their target.