Former U.S. Vice President Joe Biden swept to a convincing win in Tuesday’s Democratic presidential primaries in Florida, Arizona and Illinois over Sen. Bernie Sanders.With nearly all of the vote counted in Florida, the southeastern state that is the adopted home of Republican President Donald Trump, Biden was beating Sanders of Vermont 62% to 23%.The margin was similar in Illinois, where with more than half of precincts reporting Biden held an edge of 59% to 36%. With the wins Tuesday, Biden, in his third run for the presidency over three decades, has won 19 of the last 23 state primaries over Sanders, a self-declared democratic socialist who has vowed to lead a social and economic revolution, including a massive overhaul of the U.S. health care system.