The House Intelligence Committee will begin public hearings on the impeachment probe into President Trump beginning at 10 a.m. Wednesday in the Capitol.

How to watch

The committee will stream video on YouTube, and PBS will carry the hearings live, as will C-SPAN3, C-span.org and C-SPAN Radio. Viewers can also watch the livestream on NYPost.com.

NBC, ABC and CBS plan to interrupt regular broadcasting with special reports on the hearings.

Fox News, CNN and MSNBC plan more extensive coverage, and numerous news sites will also livestream the proceedings, only the fourth time in US history that the House has held such hearings.

Who will testify?

On Wednesday the first witness will be Bill Taylor, the top diplomat in Ukraine, who has told investigators that there was a parallel foreign policy channel set up involving Trump’s personal lawyer Rudy Giuliani that undermined the official Ukraine policy and national security interests.

Next will be George Kent, the deputy assistant secretary of state for European and Eurasian affairs, who has described how Giuliani defied the bipartisan US support for Ukraine while pushing for political investigations that could benefit Trump.

On Friday, lawmakers will hear from Marie Yovanovitch, who was ousted as US ambassador to Ukraine in May apparently due to lack of support for the president’s policies.

House Republicans released a list of witnesses they want to bring in for questioning, including Hunter Biden and the yet-unnamed whistleblower.

But Rep. Adam Schiff, who chairs the Intel Committee, was unlikely to call either, arguing it wasn’t necessary and that the GOP was trying to stage a sideshow.

What are the two sides saying?

House Democrats argue that Trump abused his authority in pressing the Ukrainian government to investigate Joe Biden and his son Hunter, who was handed a $50,000-a-month gig on the board of the Ukrainian energy company Burisma while his dad was veep despite a lack of any experience in the field.

Trump also pushed for a probe into the 2016 election, believing it was Ukraine and not Russia that meddled in the contest.

Republicans insist the evidence does not support the allegations that “Trump pressured Ukraine to conduct investigations into the president’s political rivals” and does not support the allegations that “Trump covered up misconduct or obstructed justice,” the GOP wrote in a memo on strategy.

GOP lawmakers have called the House probe a sham, while the president himself has called it an attempted coup.

What happens next?

Democrats consider the open hearings crucial to building public support for a formal impeachment vote against Trump.

House investigators can still call other witnesses to testify, most likely Lt. Col. Alexander Vindman, an Army officer assigned to the National Security Council, and Fiona Hill, a former White House adviser on Russia.

Both testified behind closed doors of their concerns about the Trump administration’s effort to push Ukraine to investigate Democrats.

Eventually, the Intelligence Committee will send a report of its findings to the Judiciary Committee, which would decide whether to pursue articles of impeachment against the president.

If that occurs, the Republican-controlled Senate would hold a trial on the charges. Republicans have so far shown little stomach for removing Trump from office, which would require a two-thirds vote in the Senate.

A House vote on impeachment could come by Christmas.

How often have impeachment proceedings been held in US history?

It has been 20 years since Americans last witnessed impeachment proceedings, when Republicans brought charges against Democratic President Bill Clinton.

They were also launched against Richard Nixon, who resigned in 1974 before the House issued its indictment, and Andrew Johnson was impeached by the House in 1868 but acquitted by the Senate by a single vote.