"Listen, we didn't need more witnesses. We needed more senators with spines," Del. Stacey Plaskett said Sunday.
"This will be the first time in my adult political career when I won't be voting for the Republican nominee for president," John Bolton said.
"You sound deranged. You're abusive. And it's really sad to see what's happened to you," the British TV host said to the former New York mayor.
"I'm focused on my job and also on my own campaign, and I'm just not going to get involved in presidential politics," said Collins.
The Utah senator's vote marked the first time in U.S. history a senator voted to convict a president from his own party in an impeachment trial.
Sen. Lindsey Graham advised caution before accepting evidence from President Donald Trump's personal attorney Rudy Giuliani.
Sen. Joe Manchin defended his vote to convict President Donald Trump on the two articles of impeachment.
Adam Schiff said Democrats had not yet discussed whether to subpoena John Bolton after the president was acquitted in the Senate impeachment trial.
Hillary Clinton said that after Donald Trump's acquittal, voters have to 'take responsibility' and 'follow Mitt Romney's lead' in November.
President Donald Trump is set to deliver his third State of the Union address a day before the Senate is scheduled to vote in his impeachment trial.