George Conway George Thomas ConwayGeorge and Kellyanne Conway honor Ginsburg Lincoln Project releases new ad blasting Trump as 'a horrible role model' George Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' MORE, husband to White House counselor Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE and a frequent critic of President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, on Wednesday predicted that Republicans in the Senate would break with the president and vote to remove Trump from office if the House votes to impeach.

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Conway tweeted that Republican senators would hide their decision to vote against the president until the last possible minute on the issue.

"I agree with this. There may be Republican senators who won’t say a word until the moment they say 'guilty' when the roll is called at the end of an impeachment trial," he tweeted, responding to a political commentator who argued that Republican senators would vote to impeach the president because many "privately hate" Trump.

I agree with this. There may be Republican senators who won’t say a word until the moment they say “guilty” when the roll is called at the end of an impeachment trial. https://t.co/zQJ8xnEfeW — George Conway (@gtconway3d) September 25, 2019

Conway has in the past called for Trump to be removed from office by members of his Cabinet via provisions in the 25th Amendment.

His tweet comes as Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) announced the beginning of a formal impeachment inquiry Tuesday afternoon, with Pelosi saying Trump "must be held accountable" for his actions.

Calls for impeachment proceedings have reached a fever pitch in Washington following reports of call between Trump and Ukrainian President Volodymyr Zelensky in which Trump asked Zelensky to investigate the son of former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, who is the Democratic front-runner to face Trump in the 2020 presidential election.

After those reports, Conway over the weekend once again called on the House to begin impeachment proceedings.

“Trump has already done more than enough to warrant impeachment and removal,” Conway wrote in an op-ed published by The Washington Post. “The current whistleblowing allegations, however, are even worse.”

The White House released a transcript of the call with the Ukrainian president on Wednesday.

Biden’s name is mentioned twice on the call, according to the document, which is titled formally as a “memorandum of telephone conversation.” The document makes clear it is not a verbatim transcript of the conversation.