Senate Majority Leader Mitch McConnell successfully blocked the Democrats’ witness requests, but the fight over the Senate impeachment trial isn’t finished.

Senate Minority Leader Chuck Schumer plans to introduce another motion to allow for new evidence and witness testimony after House Speaker Nancy Pelosi sends the articles of impeachment to the Senate. There’s a chance, albeit a small one, that it will pass. At least three centrist Senate Republicans have said they’d be willing to debate the merits of additional testimony — but only after the trial begins.