My problems with a poll based article, are. What questions were asked ? Were they leading to a predetermined conclusion, ect. By framing your question, you can influence the trend of the answer. These polls never give all the information you need to know wether you are being manipulated .
This article does not contain any obvious bias, but merely presents the evidence from the polls in a factual manner while also supplying a bit of context as to why independents would favor a Democrat over Republican for the presidency this year.