With the Washington Monument in the background, people attend a rally in support of President Donald Trump near the White House on Wednesday, Jan. 6, 2021, in Washington. (AP Photo/Jacquelyn Martin)

WASHINGTON (AP) — As Congress prepares to affirm President-elect Joe Biden’s victory, thousands of people are gathering across from the White House to show their support for President Donald Trump and his claims of election fraud.

Trump was expected to address his supporters later in the morning during a rally on the Ellipse.

Lou Murray, a life insurance salesman from Boston, said he and many others still hoped Congress and Vice President Mike Pence would not certify the vote. “I hope Vice President Pence has courage today, and I hope any politician who thinks he has a future shows courage to stand up and do what’s right,” Murray said.

About an hour before Trump was set to speak, there were long, dense lines at security checkpoints near the White House. At the Lincoln Memorial, dozens of Trump supporters stood on the steps with large Trump flags.

Nirav Peterson, who flew in from Seattle to attend the rally, said there would be a groundswell of anger and activism if Trump doesn’t serve another term and said Republicans who don’t back him should face primary challenges.

“People are angry. This isn’t going to go away,” Peterson said as she took video of the large crowd gathered beyond the steel barriers at the foot of the Washington Monument. “You have a huge, huge portion of the people who aren’t going to take it anymore.”

Like many others, Peterson was not wearing a mask. She said she opposes the shutdowns prompted by the pandemic and doesn’t believe anyone has died from COVID-19. More than 350,000 people have died from the virus in the U.S.

Organizers planned an afternoon march to the Capitol, where Congress will be voting to affirm the Electoral College results, which Trump continues to dispute.

A number of prominent Trump supporters were expected to attend the protest events, which began Tuesday with a rally at Freedom Plaza near the White House. They include Texas Attorney General Ken Paxton and longtime Trump ally Roger Stone, the recipient of a pardon by the president.

As temperatures dropped to the low 40s Tuesday night and a steady rain swept onto the streets, hundreds of protesters remained in Freedom Plaza.

“I’m just here to support the president,” said David Wideman, a 45-year-old firefighter who traveled from Memphis, Tennessee. Wideman acknowledged he was “confused” by a string of losses from Trump’s legal team in their attempt to overturn the results of the election and didn’t know what options Trump had left.

“I not sure what he can do at this point, but I want to hear what he has to say,” Wideman said.

Trump tweeted his support for the protesters: “Washington is being inundated with people who don’t want to see an election victory stolen by emboldened Radical Left Democrats. Our Country has had enough, they won’t take it anymore! We hear you (and love you) from the Oval Office.”

In a Tuesday evening tweet, Trump called on Democrats and fellow Republicans to look at the “thousands of people pouring into D.C.” In another tweet, he warned that antifa, the umbrella term for leftist militant groups that Trump has said he wants to declare a terrorist organization, should stay out of Washington.

The rallies had local officials and law enforcement bracing for potential violent street clashes. Many businesses in downtown Washington boarded up their windows, fearful that the protest could devolve into the unrest seen in May and June when dozens of businesses were vandalized.

District of Columbia Mayor Muriel Bowser called in National Guard troops to help bolster the city’s police force. She urged residents to stay away from downtown Washington and to avoid confrontations with anyone who is “looking for a fight.” But, she warned, “we will not allow people to incite violence, intimidate our residents or cause destruction in our city.”