About 72% agreed that the trial "should allow witnesses with firsthand knowledge of the impeachment charges to testify."
"Witnesses should have something to do with and direct knowledge of the charges against the president."
"To implement this corrupt scheme President Trump pressured the president of Ukraine to publicly announce investigations into two discredited allegations ...
"This is a moment of reckoning."
"The legal theories underlying both Articles I and II are both legally flawed and factually insufficient."
Senator Chuck Schumer condemned the White House's impeachment defense after the first day of the trial.
"I never saw anything like that.”
"I do think those addressing the Senate should remember where they are."
"The problem with John (Bolton) is that it's a national security problem."
The president denies any wrongdoing.
The arguments will begin when the trial resumes at 1 p.m. (1800 GMT) on Wednesday.
"She has the most to lose by coming off the trail."
McConnell said he would set aside any Democratic amendments to subpoena witnesses and documents at the start of the trial.
"There is an obvious person who should be disqualified: Adam Schiff."
"We should have the opportunity to present the case as the House chooses to present the case."
"The facts are on the President’s side."
"It’s clear McConnell is hell-bent on making it much more difficult to get witnesses and documents."
"The Senate should reject the Articles of Impeachment and acquit the president immediately."
He proposed rules that would execute a potentially quick impeachment trial for President Trump.
"He's going to give a thoughtful, substantively sound presentation."
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