So in 2008 according to the CNN exit polls"
Voters 18-29----Obama: 66%- McCain 32%
Whites 18-29--- Obama 54%- McCain 44%
Black 18-29---- Obama 95%- McCain 4%
Latino 18-29--- Obama 76%- McCain 19%
2012----
Voters 18-29--- Obama 60%- Romney 37% (D-6, R +5)
Voters 30-44--- Obama 52%- Romney 45%
White 18-29--- Obama 44%- Romney 51% (D-10, R+7)
Whites 30-44--- Obama 41%- Romney 57%
Blacks 18-29--- Obama 91%- Romney 8% (D-4, R+4)
Latinos 18-29--- Obama 74%- Romney 23% (D-2, R +4)
Blacks and Latinos 30-44 not broken out in Exit poll numbers...
2016---
Voters 18-29--- Clinton 55%- Trump 37% (D-5, R 0)
Voters 30-44--- Clinton 50%- Trump 42% (D-2, R-3)
Whites 18-29--- Clinton 43% Trump 48% (D-1, R-3)
Whites 30-44--- Clinton 37% - Trump 55% (D-4, R-2)
Blacks 18-29-- Clinton 83%- Trump 9% (D-8, R +1)
Blacks 30-44--- Clinton 87%- Trump 7%
Latinos 18-29-- Clinton 70%- Trump 24% (D-4, R+1)
Latinos 30-44--
??
So regardless, anyway you look at it between '08 and '16:
Voters 18-29--- (D -11, R +5)
Whites 18-29--- ( D-11, R +4)
Blacks 18-29--- (D-12, R +5)
Latinos 18-29-- (D-6, R+5)
So regardless of however one chooses to slice and dice the numbers, there was a clear drop-off in Millennial support among all ethnic demographics between 2008 and 2016, if one chooses to believe the exit polls....
Now obviously there are overlapping age ranges as people shift into different age groups over eight years of elections, but still the decline in Democratic voting patterns among 18-29 year olds appears across the board, with the lowest dip between '08 and '16 among Latino voters.
This collapse was already evident in the 2012 numbers where Democrats faced a major collapse among White Millennial voters, as well as smaller drops among Black and Latino Millenials.
Interestingly enough in 2016, both major party candidates saw a significant dropoff in Millennial support, with some possible small movement in the margins among Latino and Black Millennials.
Most interesting however is that White Millennials 18-29 that swung
hardest against Trump
this election, where although Clinton lost 1% off of Obama '12 numbers, Trump lost 3% (Johnson, Stein, McMullen, Write-In Bernie?
)
At this point I'm thinking that Clinton's outreach to Millennials has been a failure, considering that demographically the largest Generation did not swing her way, despite an increasingly ethnically diverse population, and a massive defection to 3rd Party candidates....