WASHINGTON (AP) — President Donald Trump will personally address a gathering of his supporters in Washington Wednesday as he seeks to rally populist support for his last-ditch efforts to overturn his loss to President-elect Joe Biden.

The White House confirmed Tuesday that Trump will speak at a rally on the Ellipse just south of the White House.

The protests coincide with Wednesday’s congressional vote expected to certify the Electoral College results, which Trump continues to dispute.

The rallies have local officials bracing for potentially violent street clashes.

With downtown D.C. businesses boarding up their windows, Mayor Muriel Bowser has requested help from the National Guard.