* An impeachment trial of President Donald Trump could keep Democratic presidential candidates who are also senators off the campaign trail for weeks.

* Republican Senators Preparing To Stab The President In The Back On Impeachment!

* Here are the 15 Republican Senators to watch: Lamar Alexander (TN), Roy Blunt (MO), Richard Burr (NC), Susan Collins (ME), Mike Crapo (ID), Joni Ernst (IA), Cory Gardner (CO), Charles Grassley (IA), Lisa Murkowski (AK), Rob Portman (OH), Mitt Romney (UT), Marco Rubio (FL), Ben Sasse (NE), John Thune (SD), Patrick Toomeny (PA).