It appears that there was not a quorum on the Senate floor when Scott initially called for unanimous consent.

[lapucelle]

That means that either all the of Democrats and some of the Republicans were not in the chamber or that some Democrats and some Republicans were not there. Either way, at least 51 senators appear to have skipped the shit show.

Senate rules presume a quorum in legislative session. Scott (R) ("notwithstanding rule XXII" ) was careful not to invoke cloture . At the end of his ridiculous speech, Tuberville (R), suggested the absence of a quorum (a procedural move), a roll call was ordered and then stopped when Lankford (R) asked for unanimous consent for the quorum call to be rescinded.

From the Congressional Record:

Mr. SCOTT of Florida: Mr. President, as if in legislative session and notwithstanding rule XXII, I ask unanimous consent that the Senate proceed to the consideration of S. Res. 403, which was submitted earlier today.

snip-------------------------------------------

Mr. Tuberville: I suggest the absence of a quorum.

The PRESIDING OFFICER: The clerk will call the roll.
The senior assistant executive clerk proceeded to call the roll.

Mr. LANKFORD: Mr. President, I ask unanimous consent that the order for the quorum call be rescinded.[/b]

The PRESIDING OFFICER (Mr.MORENO): Without objection, it is so ordered

https://www.congress.gov/congressional-record/volume-171/issue-153/senate-section/article/S6713-1

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Voting and Quorum Procedures in the Senate

The Constitution states that "a Majority of each [House] shall constitute a quorum to do business." The Senate presumes that it is complying with this requirement and that a quorum is always present unless and until the absence of a quorum is suggested or demonstrated. This presumption allows the Senate to conduct its business on the floor with fewer than 51 Senators present until a Senator "suggests the absence of a quorum."

Except when the Senate has invoked cloture, the presiding officer may not count to determine if a quorum is present. When the absence of a quorum is suggested, therefore, the presiding officer directs the Clerk to call the roll. The Senate cannot resume its business until a majority of Senators respond to the quorum call or unless, by unanimous consent, "further proceedings under the quorum call are dispensed with" before the last Senator's name has been called. If a quorum fails to respond, the Senate may adjourn or take steps necessary to secure the attendance of enough Senators to constitute a quorum. It usually takes the latter course by agreeing to a motion that instructs the Sergeant at Arms to request the attendance of absent Senators.

https://www.congress.gov/crs-product/96-452