… I’m intrigued by the parallels to the 2008 campaign perhaps because it’s where FiveThirtyEight cut its teeth. I spent a lot of time in the spring of 2008 arguing that Obama’s lead in elected delegates would be hard for Clinton to overcome. But Clinton’s lead over Sanders is much larger than Obama’s was over Clinton at a comparable stage of the race. …
Sanders will need to win about 58 percent of the remaining 2,000 or so elected delegates to tie Clinton. Since the Democrats allot delegates proportionally, that means he’d need to win about 58 percent of the vote in the average remaining state to Clinton’s 42 percent, meaning he’d need to beat Clinton by around 16 points the rest of the way. Sanders would also have to overcome Clinton’s huge lead in superdelegates, although that’s probably the least of his worries. CONT.
Nate Silver, FiveThirtyEight