The U.S. House is poised to take a historic vote today on the impeachment of President Donald Trump.

House debate began this morning and will continue into the evening with a vote coming as late as tonight at 7 p.m. ET. Major networks and cable channels will carry coverage – some live all day – with emphasis on the vote itself. You can also watch it on C-SPAN.

The House vote comes after a Judiciary Committee passed two articles of impeachment, both related to Trump’s dealings with Ukraine over a possible investigation into the son of Democratic presidential hopeful and former vice president Joe Biden. The first article accuses the president of abuse of power; the second of obstructing Congress by blocking probes into the matter.

The articles are widely expected to pass the Democrat-controlled House, making Trump only the third president in U.S. history to be formally impeached. Andrew Johnson was impeached in 1968 and Bill Clinton in 1998. Richard Nixon was the subject of impeachment hearings but resigned in 1974 before being removed from office.

It will take 216 votes to pass an impeachment article. The House has 233 Democrats.

The matter will then go the Republican-controlled Senate, where it’s not expected to come up before the start of the new year. Senate Republicans have vowed to vote down the articles, allowing Trump to remain in office.

He faces reelection in 2020.