Obviously we can't confirm that your description of your experience is accurate or true, but polls show quite different demographics for Trump supporters. People who support Trump are overwhelming white (91%)--Trump has basically no appeal to racial or ethnic minorities; 84% of Trump supporters are over 45 years old; 43% have a high school education or less; and 72% make less than $100k per year:
http://www.arbiternews.com/2016/01/06/demographics-of-donald-trump-supporters/
Interestingly, those demographic figures might explain why Republicans voters in the primaries picked the one candidate who couldn't possibly win the election.
Polls by who? The mainstream that is full time in the can for SHillary? Anyway, my stats are from my own websites, some of which cover politics, and most of my comments are on my own audiences.
Trump has high appeal with legal immigrants who are tired of being blamed for everything illegals do, and there are a large percentage of African-American voters who are voting Trump as well. (Mostly middle-class, but some lower class who are tired of the same old lies.) Trump also does well with small business owners, and the self-employed. because of 2A support.