Trump impeachment trial: Senate passes impeachment trial endgame

The defeat of the vote on witnesses Friday moves the trial into the final phase, setting up an acquittal vote next week.

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Senators on Friday laid out the ground rules of the final phase of President Donald Trump's impeachment trial, voting largely on party lines against calling witnesses and documents.

The final vote on Trump's fate is set for Wednesday and is almost certain to end in an acquittal.

Read about the highlights below:

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What if there's a tie vote? Everything you need to know about a tie in Trump's trial

Ahead of the vote expected on Friday afternoon on whether to call witnesses at President Donald Trump's impeachment trial, GOP Senate leaders believe they will have just enough votes to block additional testimony and documents.

"I think we can all agree this is a big day," said Senate Majority Leader Mitch McConnell, R-Ky.

For witness testimony to be approved, four Republican senators would need to vote alongside all Democrats. Republicans have a 53-seat majority in the 100-member Senate.

In another possible scenario, three GOP lawmakers vote for witnesses, making it a 50-50 tie — under which the resolution would be defeated. But Supreme Court Chief Justice John Roberts, who is presiding over the trial, could weigh in as a 101st vote, although that's not anticipated.

Read what could happen Friday afternoon.

Trump's Senate trial: Key takeaways from senators' questions as witness vote in doubt

The senator's questions of House managers and President Donald Trump's defense team Thursday offered both sides ample opportunity to clash ahead of a pivotal vote Friday on whether to call witnesses in Trump's impeachment trial.

They included queries about when the president ordered the hold on Ukraine aid, why he lifted the hold and who was paying for his personal lawyer's trips abroad. The chief justice refused to read one question, from Republican Sen. Rand Paul of Kentucky, who has sought to out the whistleblower whose complaint led to the impeachment charges against Trump.

Here are seven key takeaways from Thursday's question-and-answer session.