The bid by members of the Democratic Party to impeach US President Donald Trump has entered a critical juncture.
Democrats will cast their first vote in the impeachment effort.
The vote in the House of Representatives will be on a resolution on how the impeachment process should pan out going forward.
It will also define the rights that the legal representatives of the US President should have.
The vote will give a sense of the scale of support that the impeachment process enjoys in the Democratic-controlled House of Representatives.
In a nutshell, the vote is all about setting the rules and regulations that will govern the whole process so that all those involved are clear about the rules of the game.
The vote will mark another escalation in the tussle between the Democrats and President Trump who has charged that the impeachment process is a political witch-hunt.
Among the charges that the US president faces is trying to apply undue pressure on the Ukrainian government to initiate investigations into corruption claims against his possible rival, Joe Biden.
Republicans have taken issue with the closed-door nature of the impeachment proceedings.
Democrats maintain that they first need to gather evidence ahead of the public stage of the impeachment hearings.