Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. 6 More States Vote Next in Democratic Presidential Nomination Battle Ken Bredemeier WASHINGTON - Six more U.S. states vote next Tuesday in the marathon chase for the Democratic presidential nomination, with the two remaining key candidates, former Vice President Joe Biden and Vermont Sen. Bernie Sanders, dueling to gain an edge. "I like Joe Biden. I think he's a decent human being," Sanders said Wednesday. "But we have a very different vision for this country. Joe has his ideas about the future, and I have mine." Among other issues, the two widely differ on U.S. health care, with Sanders calling for a government-run system and an end to the use of private insurance plans to pay health care expenses. Meanwhile, Biden wants to make improvements in the Affordable Care Act that now controls health care spending in the United States. Next up on the political calendar are party primaries in the Midwestern states of Michigan and Missouri, the western states of Washington and Idaho, and Mississippi in the South, with caucuses in the upper Midwest state of North Dakota. Democrats living abroad are also voting in a collective primary that has already started and ends March 10. .