White House hopeful Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.) will give a speech next week in Washington, D.C., defending democratic socialism, his campaign announced Saturday.

The speech on Wednesday at George Washington University will address how “democratic socialism is the only way to defeat oligarchy and authoritarianism,” according to a press release from his campaign.

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Sanders “will make the case that a strong grassroots campaign based on these progressive values is the only way to confront oligarchy and authoritarianism and defeat Donald Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE,” the release states.

The speech comes amid an intensifying debate within the Democratic Party about how to best take on Trump in 2020, with moderate candidates pushing back on a slate of progressive policies such as “Medicare for All” and the Green New Deal.

Sanders, a self-proclaimed democratic socialist and one of the front-runners in the crowded primary field, has doubled down on his commitment to such policies as he seeks to dethrone centrist Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE from atop several statewide and national primary polls.

"Democratic socialism to me is creating a government and an economy and a society which works for all, rather than just the top 1 percent," Sanders said at a town hall in April. "It means ending the absurd inequalities that exist today."

Democratic socialism is about creating a government and economy that work for all Americans, not just the top 1%. #BernieTownHall pic.twitter.com/FybjC7SPPw — Bernie Sanders (@BernieSanders) April 15, 2019

While several 2020 candidates have joined Sanders in appealing to the insurgent progressive flank, not all have fallen in line.

Former Colorado Gov. John Hickenlooper John HickenlooperCook Political Report shifts Colorado Senate race toward Democrat Willie Nelson playing at virtual fundraiser for Hickenlooper Gardner on court vacancy: Country needs to mourn Ginsburg 'before the politics begin' MORE (D) was booed last week when he told delegates at the California Democratic Party convention, “If we want to beat Donald Trump and achieve big progressive goals, socialism is not the answer.”

With Trump and several other top Republicans already going on the offensive to label the entire Democratic Party as one in full embrace of socialism, Hickenlooper told The Hill shortly after the California incident, “If we don't draw a clear distinction between Democrats and our candidates and socialism, the Republicans will paint us into a corner that we can't get out of.”

Republicans have also knocked several presidential candidates as they unveil sweeping policies, many of which have price-tags worth trillions of dollars.