Former vice president Joe Biden, according to news reports, is strongly leaning toward a presidential run. You can understand why a popular former VP and senator with decades of experience and 100 percent name ID would want to run for president, especially if he regrets not running last time.
He apparently has said he thinks he's the only one who could win, or, more generously, that if he saw someone else who could win, he'd stay out. Does that argument make sense?
The notion that only one Democrat can beat President Donald Trump assumes Trump will be the nominee.