I am sure the crowd, changing "hang Mike Pence" would have wanted to see a hanging. Even if all that happened is they pushed him off the edge of the platform, and the 4x4 uprights getting pulled over as Pence plunged to the ground.
The whole act would have been to put the fear of GOD into the VP, and convince him to "do the right thing".
They actually needed Pence alive as president of the senate,
A constitutionally recognized officer of the Senate who presides over the chamber in the absence of the vice president. The president pro tempore (or, "president for a time") is elected by the Senate and is, by custom, the senator of the majority party with Dr the longest record of continuous service.
Thus either Charles Grassley (R) or Patrick Leahy (D) would have done the counting.