Another one
Democrat poll. Not all polls are equal. Take this with the same grain of salt you would a poll coming out of the Trump campaign.
http://www.publicpolicypolling.com/pdf/2015/PPP_Release_National_92916.pdf
They have a 41/34/25 (D/R/I) split.
Gallup party affiliation poll says it should be:
31/27/38 (D/R/I)
They have gender at 53/47 f/m and the US census 2013 says it’s 52/48 f/m
Start reading the questions in this poll at number Q13. Start counting how many are negative about Donald Trump and how many mention Clinton at all.
Read question 27: 50 Obama, 40 Romney, 10 other.
Actual election results in 2012: 51.7 Obama, 47.2 Romney, 1.1 other.
This sample of likely voters, if they’re likely to have voted in the past, has an odd mix of supporters for Obama and a lack of supporters for Romney.