What to Watch for as Donald J. Trump’s Impeachment Trial Begins

The second impeachment trial of former President Donald J. Trump begins on Tuesday, about a month after he was charged by the House with incitement of insurrection for his role in egging on a violent mob that stormed the Capitol on Jan. 6.

Here’s what you need to know.

How will the trial unfold?

Senate Democrats and Republicans, joined by the House impeachment managers and Mr. Trump’s legal team, reached a bipartisan agreement on Monday that would pave the way for an especially quick and efficient proceeding that could be over by early next week.

The rules allow each side up to 16 hours to lay out its case. The Senate is poised to vote to approve the rules and formally begin the trial at 1 p.m. on Tuesday.

Up to four hours will be devoted to debating the constitutionality of impeaching a president who is no longer in office. If a simple majority of senators agree to move forward, as expected, the main part of the trial begins.

Starting Wednesday, the prosecution and the defense will have 16 hours each to present their cases to the senators, who are serving as a jury. The oral arguments will continue at least through Friday, but could extend into next week.

Tradition dictates that senators are then allowed at least one day to ask questions. This time, senators may give House managers the option to force a debate and vote on calling witnesses, but it is unclear if they will choose to do so. The trial is expected to conclude with closing arguments and a final vote on whether to convict Mr. Trump.

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What You Need to Know