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Democrats hope they persuaded these Republicans to back impeachment witnesses

At least four GOP senators would need to support a resolution seeking testimony.
Image: Sen. Mitt Romney, R- Utah, at the Capitol on Jan. 24, 2020.
Sen. Mitt Romney, R- Utah, at the Capitol on Jan. 24, 2020.Mario Tama / Getty Images

The House managers are finishing up their opening arguments in their case against President Donald Trump — but it's still unclear whether they'll be able to present any new evidence.

"Every day more and more of the public is watching," Senate Minority Leader Chuck Schumer said Thursday. "I am more hopeful than ever that four conscientious brave Republicans will come forward and tell (Senate Majority Leader) Mitch McConnell you can't shut this down without witnesses, you can't shut this down without documents."

With the GOP holding a 53-47 majority in the Senate, Democrats would need at least four Republicans to cross party lines in order to be able to call witnesses or subpoena documents in the third presidential impeachment trial in American history.

Here's a look at some of the Senate Republicans who could cross party lines and where they stand.

Mitt Romney, Utah

Romney, who is Trump's most outspoken Republican critic in the Senate, has said he'd "love to hear" what Bolton has to say. He's declined comment on his thoughts during the trial.

“I won’t speak to the process until the entire thing is done,” he said Thursday.

Susan Collins, Maine

Collins, who is up for re-election later this year, said before the trial senators "should be completely open to calling witnesses."

She also said she was working with a "fairly small group of Republicans" to make sure there was a procedure in the impeachment trial rules allowing senators to call for witnesses after opening arguments and senators get to question both sides. Collins hasn't said anything tipping her hand on the witnesses issue since the Democrats made their case, but expressed her displeasure about Rep. Jerry Nadler, D-NY, telling senators they'd be complicit in a cover-up if they didn't call witnesses on Tuesday night.

"I was stunned by Congressman Nadler's approach," Collins said Thursday, acknowledging she sent a note to Chief Justice John Roberts, who is presiding over the Senate trial, complaining about the comments. She said it would not affect her votes in the trial.

Lisa Murkowski, Alaska

Murkowski said in an interview on Christmas Eve that she was "disturbed" that McConnell would engage in "total coordination" with the White House regarding the trial.

She, along with Romney and Collins, refused in October to add her name to a resolution condemning the House impeachment inquiry. But she's also been critical of the House impeachment inquiry, and an aide told NBC News she, too, was "offended" by Nadler's remarks.

Murkowski told reporters on Saturday she wanted to "really hear the case" and ask questions "before we make that determination as to, what more do we need. I don't know what more we need until I've been given the base case." She'll have the chance to pose questions next week.

Lamar Alexander, Tennessee

Alexander said Monday he'd vote against a motion to dismiss the case if one were presented because he was weighing whether to hear from additional witness.

"I think we need to hear the case; ask your questions," Alexander, who is retiring at the end of his term and is close with McConnell, told NBC News. "Then, as they did in the Clinton impeachment, we ought to decide then whether we need to hear from additional witnesses or need additional documents."

He has declined to say where he stands on witnesses since the Democrats' arguments began this week.

Others Republicans to watch...

Sen. Cory Gardner of Colorado is up for re-election and considered perhaps the most vulnerable GOP senator in 2020, making his approach on impeachment difficult to read. He repeatedly criticized the House investigation.

Sen. Shelley Moore Capito of West Virginia has also been noncommittal, saying the Senate should decide on whether Bolton should testify later in the trial.

The vote on whether to hear witnesses is expected to be held late next week.