As Trump tweeted this weekend that he wants the Senate to immediately dismiss the charges against him, Senate Majority Leader McConnell is likely not to mandate a vote to dismiss at any point in the process to protect politically vulnerable Republicans.

Sen. Lamar Alexander, R-Tenn.,— a key senator to watch in this process along with four other moderate Republicans: Romney, Collins, Murkowski and Gardner— said Monday evening that he would not vote on a motion to dismiss because he wants to decide if he wants to hear from witnesses.

“I would vote against the motion to dismiss. I think we need to hear the case; Ask your questions. Then as they did in the Clinton impeachment we ought to decide then whether we need to hear from additional witnesses or need additional documents. So a motion to dismiss is not consistent with hearing the case,” Alexander told NBC News.