WASHINGTON-A US congressional panel leading the impeachment inquiry against President Donald Trump will debate the evidence against him on Monday, with Democratic lawmakers poised to move forward with formal charges of wrongdoing within days.

The Democratic-led House Judiciary Committee will formally review evidence from impeachment investigators at an all-day hearing scheduled to begin at 9 a.m. (1400 GMT), a key step before determining charges, known as articles of impeachment, that the full House of Representatives is likely to vote on before Christmas.

The committee could vote to send them to the House floor later this week, Democratic Judiciary Chairman Jerrold Nadler said on Sunday, as lawmakers sharpened their focus on charges of wrongdoing in Trump’s dealings with Ukraine.

That will set up an inevitable clash with Trump and his Republican allies, who maintain that Democrats are on a partisan mission to unseat a president who did nothing to merit impeachment. No current House Republican has come out in favour of impeaching Trump.

A vote in the Democratic-led House in favour of impeachment would trigger a trial in the Republican-controlled Senate where a two-thirds vote would be needed to remove the president from office. A conviction is considered unlikely.

It has been 20 years since Americans last witnessed impeachment proceedings, when Republicans brought charges against Democratic President Bill Clinton arising from a sexual relationship he had with a White House intern. He was acquitted in the Senate.

“It’s up to us now in the House, and presumably will be up to the senators, to see if we will and if the senators will put the welfare of the country and patriotism above partisan considerations or not,” Nadler said on CNN’s “State of the Union” on Sunday.

But on ABC’s “This Week,” House Judiciary Republican Matt Gaetz said the impeachment drive was “exclusively supported by Democrats.” After weeks of investigation into Trump’s request that Ukraine investigate former Vice President Joe Biden, a leading contender for the Democratic nomination to face the president in the 2020 election, the committee is focused on two articles charging Trump with abuse of power and obstruction of Congress.

Democrats have also accused Trump of abusing his power by withholding $391 million in security aid to Ukraine - a vulnerable U.S. ally facing Russian aggression - and holding back a coveted White House meeting with Ukrainian President Volodymyr Zelenskiy as leverage to pressure Kiev into investigating Biden and his businessman son, Hunter Biden.