Sen. Kamala Harris Kamala HarrisJoe Biden looks to expand election battleground into Trump country Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE (Calif.), one of the Democrats running to challenge President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE in 2020, announced Tuesday that she would deliver a prebuttal on Facebook Live about an hour before he gives his State of the Union address.

"I'm delivering remarks tonight on Facebook Live ahead of the President’s State of the Union Address," Harris said on Twitter. "It's critical we speak truth to the American people during this inflection moment in our country's history."

NEWS: I'm delivering remarks tonight on Facebook Live ahead of the President’s State of the Union Address. It's critical we speak truth to the American people during this inflection moment in our country's history. Tune in at approximately 7:45PM ET --> https://t.co/J944ScCiVq — Kamala Harris (@SenKamalaHarris) February 5, 2019

Trump is slated to give the annual State of the Union address from the Capitol at 9 p.m. on Tuesday. Stacey Abrams, who ran unsuccessfully for Georgia governor last year, will give the official Democratic response.

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California Attorney General Xavier Becerra (D) will give the Spanish-language Democratic response, and Sen. Bernie Sanders Bernie SandersJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee Trump campaign plays up Biden's skills ahead of Cleveland debate: 'He's actually quite good' Young voters backing Biden by 2:1 margin: poll MORE (I-Vt.) has planned his own rebuttal as well.

Sanders said on Monday that he would respond to Trump's comments in a stream aired on Facebook, YouTube and Twitter.

Harris, 54, announced on ABC's "Good Morning America" in late January that she would run for president. She officially kicked off her campaign at a rally in Oakland, Calif., saying that she was "running to fight for an America where the economy works for all people."

"For an America where you only have to work one job to pay the bills," Harris said at the time.