Updated 10:22 p.m. | Senate Majority Leader Mitch McConnell and liberal firebrand Sen. Elizabeth Warren clashed on the chamber floor Tuesday evening, with the Kentucky Republican moving for the Massachusetts Democrat to take her seat.

Senators voted along party lines, 49-43, to uphold a ruling of the chair, blocking Warren from speaking for the remainder of the debate on confirmation of fellow Sen. Jeff Sessions as attorney general.

The scene pitted a Trump ally and the Senate Republican leader against a potential 2020 Democratic contender for the White House. Warren backers quickly began using the hashtag #LetLizSpeak to show their support on Twitter.

McConnell objected to Warren’s request that she be allowed to continue her critical remarks about the Alabama Republican, President Donald Trump’s pick to head the Justice Department.

McConnell said Warren had impugned Sessions in contravention of Rule XIX. Warren lost an appeal on a roll call vote, to which Democrats responded with further procedural motions.