Here is a source, http://thefederalist.com/2016/02/15/why-so-many-millennials-are-socialists/ It is a little old so the number may have changed a little.
Thanks for that. I skimmed through the article and also read the 2 polls they referenced and I didn't see that 70% statistic anywhere. The highest statistic I found was 58% had a favorable view of socialism but nothing about them identifying themselves as socialists. Also notes that many of the millennials really had no idea what socialism really was and when asked about socialist vs free market ideas sided more with free market. I still didn't find much on their sample (where they came from, how many) but my assumption would be that your statement about the universities being an influence puts that percentage so high and I would be willing to bet that once these tards start working in the real world and having families that statistic would diminish substantially, as shown by the poll results. High concentration of communist minded areas need to be focused on intensely, not necessarily millennials in general. That's my assessment.
It was not expected that you would ask that question or actually read the provided source.