That's one down.

The Senate stuck to party lines Tuesday as President Trump's impeachment trial got under way. Senate Minority Leader Chuck Schumer (D-N.Y.) introduced an amendment to the rules dictating the impeachment proceedings which called for the Senate to subpoena White House documents related to the events. Senate Majority Leader Mitch McConnell (R-Ky.) then responded with a motion to table the proposal.

There wasn't much drama after that. The motion to table passed 53-47, as every member of the upper chamber stuck with their side, including a few GOP lawmakers like Sens. Susan Collins (R-Maine), Lisa Murkowski (R-Alaska), and Mitt Romney (R-Utah), who are generally considered the biggest threats to cross the aisle. Collins, for her part, issued a statement shortly after the vote indicating her decision had more to do with the timing of Schumer's proposal than her opposition to bringing in new evidence.

After the defeat, Schumer introduced a second amendment, this time calling for documents from the State Department. Tim O'Donnell