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. Biden, Sanders Squaring Off in Next Democratic Presidential Voting Ken Bredemeier WASHINGTON - Former U.S. Vice President Joe Biden, the easy winner of the South Carolina Democratic presidential primary, faces an immediate new challenge from Vermont Sen. Bernie Sanders when 14 states vote Tuesday in party contests across the country. Biden, in three runs for the presidency, had never won a state primary nominating election until Saturday. But pre-election surveys show that Sanders, a self-declared democratic socialist, is handily leading in California, where the most delegates to the party's mid-summer national presidential nominating convention are at stake in the next round of voting. The polling shows Biden ahead in seven of the states with Tuesday contests, Sanders in six and Sen. Amy Klobuchar in the lead in her home state of Minnesota. "It's going to be very hard to make up ground in California," Biden acknowledged Sunday on ABC News's "This Week." But he said, "I feel very good where it's going" in other states, adding that he's "not even certain" that he will be trailing Sanders in the overall convention delegate count after the Tuesday voting. Biden declared that he can beat Republican President Donald Trump in November's national election and "bring along [Democratic] candidates and win the Senate" that is now controlled by Republicans. A third of the pledged delegates to the July convention in the Midwestern city of Milwaukee, Wisconsin, are at stake in the Tuesday voting, when former New York Mayor Michael Bloomberg's name will appear on the ballots for the first time.