Confronted with poor primary performances in states with higher populations of low-income people, Democratic presidential candidate Bernie SandersBernard (Bernie) SandersOvernight Health Care: DOJ charges doctors over illegal opioid prescriptions | Cummings accuses GOP of obstructing drug pricing probe | Sanders courts Republican voters with 'Medicare for All' | Dems probe funding of anti-abortion group Ex-Obama campaign manager: Sanders can't beat Trump Booker calls for sweeping voting rights reforms MORE said his losses are due to those people not voting. 

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"Well, because poor people don't vote. I mean, that's just a fact. That's a sad reality of American society," Sanders said in an interview with MSNBC's "Meet the Press" set to air in full on Sunday. 

Host Chuck Todd had asked about rival Hillary ClintonHillary Diane Rodham ClintonMcAuliffe says he won't run for president in 2020 Chuck Todd slams reports that DOJ briefed Trump on Mueller findings: 'This is actual collusion' Crowdfund campaign to aid historically black churches hit by fires raises over M MORE's victory in 16 of 17 primary contests in states with the highest levels of income inequality. 

“If we can significantly increase voter turnout so that low-income people and working people and young people participated in the political process, if we got a voter turnout of 75 percent, this country would be radically transformed,” Sanders said. 

Sanders has often pinned his success rate to voter turnout. But he has lost among Democratic voters with household incomes below $50,000, 55 percent to 44 percent, across primaries where network exit polls have been conducted, according to The Washington Post.