This is a very interesting and somewhat troubling picture of young adult America. I don't think the polls are presenting an accurate picture of where most of millennials are politically. I think young people want clean air, reproductive freedom of choice, and a biosphere that is protected from brutish exploitation by mindless profiteers.
Maybe young people aren't polling so strongly for Democrats because they recognize that the Democratic Party is part of the problem. What they want is a progressive alternative that is forward thinking, life-affirming, and sustainable. To get that, the corruption that is pervasive in American politics must stop. We need a 28th Amendment that says 'Corporations are not People' and 'Money is not Speech'. That is the way to energize millennials. Give them a worthy pathway into the future..EMPDX.
Sean McElwee wrote this piece for AlterNet. Nice work Sean...
White millenials are also significantly less  supportive of Obama (54 percent) than black millenials (95 percent) and Hispanic millenials (76 percent). The most recent poll  of Obama finds that young whites and older whites have virtually identical approval ratings. A recent Pew survey of millennials finds  that on economic issues, there are strong gaps between young whites and young non-white millenials (see chart).
On social issues, however , these gaps are virtually non-existent. This suggests that while social liberalism will continue to be a political winner, economic liberalism may be tougher to sell to white millenials. Additionally, while white millenials say they  want to live in a racially equitable society, they are no more likely than their parents  to support policies to make that society come about. ”At the same time, whites  primed  with the reality of growing diversity become are less likely to say they support diversity and more likely to support the Republican party.”
Furthermore, even as minorities make up a larger and larger percentage of the electorate, these racial changes will not inevitably benefit Democrats. While Republicans have never won more than 40 percent of the Latino vote – the claim that Bush won 44 percent in 2004, as widely reported, now appears to have been incorrect — they could do so in the future. Pew data, for example, show  that third generation Hispanics are more socially liberal, but more economically conservative than older Hispanics.
Additionally, a recent Gallup poll shows  support for Obama among younger Black Americans is modestly lower than support among their older counterparts. This actually hold strue among millenials as a whole; as there appear to be age gaps that would render the Democratic advantage ephemeral. Harvard’s Institute of Politics finds  that there is a distinct difference between the way young millenials (18-to-24) and older millenials (25-to-29) view Obama. Meanwhile, a 2012 American University poll finds  that college students in swing states supported Obama by 35 points, while high schoolers (13-to-17) in swing states supported Obama over Romney by only 7 points.
Discussing the future always presents challenges, particularly in the realm of politics. However, when we look at the ideologies that shape the parties, we can see a few general trends from these data. First, the economic liberalism of the millenial generation appears to be driven primarily by people of color , rather than by younger, more liberal whites. (On social issues, the generation appears to be more liberal across the board.) Second, while millenials lean Democratic, they are still effectively up for grabs. White millenials, the data show, may become suspicious of further government programs to advance racial equality, and young people of color may be open to a Republican party that eschews virulent racism. Finally, electoral structures combined with the geographic locations  of Democratic voters will bias the system toward Republicans for at least another decade, and possibly longer.
It’s difficult to know what parties will do to remain viable in a shifting American political landscape. However, it’s by no means certain that a new “Democratic majority” will be an economically liberal one. It’s plausible that the new Democratic party will embrace an Andrew Cuomo-esque neoliberalism. The Democratic party that appears to be emerging will be friendlier to finance and economically conservative, but also very socially liberal, particularly on gay marriage and women’s rights. The Democratic party will be committed to reducing greenhouse gas emissions but not at a terrible price to businesses. Public goods will be sold off at bargain basement prices and the safety net will be expanded only slowly, if at all. Both parties will pretend that racial grievances are a thing of the past and present a rosy vision of color-blind America. The ideological distance of both parties on foreign policy will remain where it is today: virtually indistinguishable. This is not inevitable, but what we know about millenials, particularly white ones, suggest this is the most plausible scenario. In the battle for the soul of the Democratic party, millenials might not be on Team Elizabeth Warren.