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. Former VP Joe Biden Picks Up Key Endorsements Ahead of Super Tuesday Balloting Ken Bredemeier WASHINGTON - Former U.S. Vice President Joe Biden picked up three key endorsements Monday from former rivals for the Democratic presidential ticket, adding momentum to his campaign ahead of voting in primaries in more than a dozen states known as Super Tuesday. U.S. Sen. Amy Klobuchar ended her bid for the Democratic presidential nomination Monday and, along with former Texas Congressman Beto O'Rourke, endorsed Biden at a rally in Dallas. Klobuchar's withdrawal came a day after another moderate Democrat, former South Bend, Indiana, Mayor Pete Buttigieg, ended his campaign. He also endorsed Biden on Monday. Klobuchar, from the Midwestern state of Minnesota, positioned herself as a practical pragmatist in the Democratic presidential nomination race, adopting decidedly moderate positions on several issues, including opposition to a government takeover of health care insurance in the United States. But despite a brief surge in political surveys, she did no better than third-to-sixth-place finishes in the first four state nominating contests last month. Pre-election surveys for Super Tuesday voting showed her ahead only in her home state. Biden swept to his first primary election victory in three runs for the U.S. presidency on Saturday, a convincing win in South Carolina. In addition to Klobuchar and Buttigieg, billionaire environmentalist Tom Steyer also dropped out of the race after Biden's strong showing in South Carolina. .