America's oldest millennials — nearing 20 when airplanes slammed into the World Trade Center — can remember the economic prosperity of the 1990s, and when a different Clinton ran for president. [...] millennials have edged out baby boomers as the largest living generation in U.S. history, and more than 75 million have come of age. With less than three months to Election Day, the values of young Americans are an unpredictable grab bag. The first-of-its kind survey of young people between the ages of 18 and 30 was conducted by the Black Youth Project at the University of Chicago with the Associated Press-NORC Center for Public Affairs Research. Millennials' disdain for traditional party affiliation means that half describe themselves as independents, according to a 2014 Pew Research report — a near-record level of political disaffiliation. Trip Nistico, a recent Colorado law school graduate, is a gun rights advocate who visits shooting ranges — but also supports in same-sex marriage. [...] Trump remains unpopular among millennials and nearly two-thirds of Americans between the ages of 18 and 30 believe the Republican nominee is racist, according to GenForward's poll. Bill and Kristi Clay, parents of two young boys and devout Christians from rural Ohio, have struggled to pick a candidate who matches their values. In 2012, however, just 45 percent of millennials cast ballots and participation has leveled off or dropped since, said John Della Volpe, director of polling at Harvard University's Institute of Politics.