Stick a fork in him and all that. Sanders is done. Let me call your attention to a few exit poll results that caught my eye from Michigan.
First, as noted in this space a little earlier, the white working class was not enthusiastic about Bernie this year and they showed it. Sanders lost both white noncollege (43-50) and college (41-56) voters to Biden in Michigan. (Table below)
Looking forward to the general election, Biden is showing important strength in Michigan among the white noncollege demographic. In a Michigan Biden-Trump matchup (Monmouth poll), Biden does about as well among white college graduates today as Clinton did in 2016 in a comparison with States of Change data. But among white noncollege voters, he runs 9 points better (-12 vs. -21).
Second, note how well Biden especially did among white noncollege women who, as I have argued, could be they key to the 2020 election for the Democrats. Biden carried white noncollege women 55-42 over Sanders in Michigan. (Table below)
Finally, note that, as in other states, while Sanders got overwhelming support of young voters (actually slightly less than in 2016), he failed to get exceptionally high turnout from these voters. In 2016, 18-29 year olds were 19 percent of primary voters in Michigan in 2016; this year they were just 16 percent.
And so it goes. Pretty much every weakness Sanders displayed in Super Tuesday voting was on display again tonight. And of course he got crushed in the black vote.
There is no longer a viable Sanders theory of the case. Time to pack 'em up, Bernard brothers and sisters.