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. How Winning Turned Joe Biden Into a Confident Candidate Associated Press LOS ANGELES - Joe Biden strode confidently to the podium, shutters clicking, a bank of cameras beaming to a national audience. "Those of you who have been knocked down, those of you who have been knocked out, this is your campaign," Biden said Wednesday. "We welcome all of those who want to join us. We're building a movement." The former vice president has found his stride and his voice as he becomes a front-runner for the Democratic presidential nomination. Gone is the sometimes mumbling, almost wistful 77-year-old, standing before small Iowa crowds full of voters lamenting the state of the union. "What in God's name is happening?" he'd ask, after deviating from anything approaching prepared remarks. Instead, there's a confident candidate, jabbing at Bernie Sanders, his chief rival for the Democratic nomination, yet reserving his biggest swings for the Republican president he hopes to topple in the fall. "If we give this man another four years in the White House, he will forever and fundamentally change the character of this nation," Biden said Wednesday. But Biden also tries to seem above the trenches, promising to unify a fractious Democratic Party and a general electorate roiled by Donald Trump's presidency. It's part scrappy Joey Biden, the kid from Scranton, Pennsylvania, who learned to navigate a severe stutter but still talks of the searing humiliation. It's part Delaware senator, the deal-maker promising to replace Washington churlishness with comity, dignity and diplomacy. It's part two-term vice president, the national officeholder who believes "with every fiber of my being" that he can return in the top spot this time and "heal the nation." And it's part devoted husband and father, wearing personal loss as public grief. Of course, Biden's Super Tuesday surge was aided in part by the unceremonious fall of billionaire Mike Bloomberg, who entered the race because Biden appeared headed toward an uninspiring finish. Similarly, he benefited from party moderates' fears about Sanders, whose democratic socialist identity mainstream Democrats see as a November albatross. That was enough for two competitors, Amy Klobuchar and Pete Buttigieg, to drop out and endorse Biden, with former candidate Beto O'Rourke making it an endorsement trifecta on Super Tuesday eve. Nonetheless, the former vice president put himself in position to take advantage of those dominoes, tapping personal and political strengths and muting at least some of his weaknesses to make a comeback unparalleled in modern presidential campaigns. Those close to him describe a candidate and campaign jolted into abandoning a "Rose Garden" campaign -- the kind of effort an incumbent president might run by using the trappings of the office -- that had come off as cautious and, worse, presumptuous. .