Bernie Sanders Will Remain in Race and Attend Sunday’s Debate

BURLINGTON, Vt. — Senator Bernie Sanders said on Wednesday that he was continuing his campaign for the Democratic presidential nomination despite suffering big primary losses this week, and that he planned to attend the scheduled debate on Sunday against former Vice President Joseph R. Biden Jr.

Mr. Sanders, appearing at an afternoon news conference here, said he was not quitting the race and wanted to debate Mr. Biden, who handily defeated Mr. Sanders in four states on Tuesday.

Listing a number of the issues on his progressive agenda, he addressed Mr. Biden directly and asked “Joe, what are you going to do?” about issues like health care, income inequality, mass incarceration and the criminal justice system.

“Last night obviously was not a good night for our campaign from a delegate point of view,’’ Mr. Sanders said, referring to losses in four states to Mr. Biden. But he asserted that he was “winning the generational debate,” saying that while Mr. Biden was appealing to older voters, he was drawing younger Americans, and that the party needed to build around the leaders of the future.