Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeHow fast population growth made Arizona a swing state Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden MORE (R-Ariz.) was booed Saturday after he appeared to poke fun at his confrontation with an alleged victim of sexual assault the day before as he tried to enter an elevator.

Flake joined Sen. Chris Coons Christopher (Chris) Andrew CoonsMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Del.) onstage at the Global Citizens Festival to support bipartisan leadership on foreign aid, according to MSNBC.

While delivering remarks at the festival, Flake discussed how their personal relationship helped make the “politics of compromise that prevailed” on Friday.

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The Arizona Republican was referring to the deal he secured with the Senate Judiciary Committee to delay a floor vote on the nomination for Judge Brett Kavanaugh to the Supreme Court for the FBI to investigate the sexual assault allegations against him.

Coons then went on to say he and Flake wanted to “see democracy working here at home,” before Flake added: “Thanks to all of you global citizens who have contacted us this year, you have texted, you have called, you have touched our hearts. Keep calling.”

“There are people’s voices we need to hear from around the world and here in our own country,” Coons continued. “So keep reaching out because we hear you and we need to keep hearing from you.”

“So feel free to join me in an elevator anytime,” Flake quipped shortly after, drawing a boos from the audience.

WATCH: Sen. Flake encourages voters to "keep calling" their elected officials at #GlobalCitizen Festival:



"Feel free to join me in an elevator any time," Sen. Flake says after being confronted by a sexual assault survivor in an elevator Friday before the vote on Judge Kavanaugh. pic.twitter.com/PYfkaksZgE — MSNBC (@MSNBC) September 29, 2018

Flake was confronted by protesters on Friday on his way to the Senate Judiciary Committee vote on whether to advance Kavanaugh’s Supreme Court nomination to the Senate floor for a confirmation vote.

As Flake tried to get on the elevator, protesters crowded around the doors to keep the elevator closing.

That was when one protester told the Republican senator that she was sexually assaulted and no one believed her.

“I didn’t tell anyone and you’re telling all women that they don’t matter, that they should just stay quiet because if they tell you what happened to them you are going to ignore them,” she said to Flake in tears as the senator stood in the corner of the elevator looking down.

“Look at me when I’m talking to you,” the woman yelled. “You’re telling me that my assault doesn’t matter, that what happened to me doesn’t matter, that you’re going to let people who do these things into power.”