Even if Hillary is tied with Bush and only slightly behind Rubio in MI, it's still bad news for her. Rubio is ahead in FL and competitive in MI and PA, states that she needs to win.
The problem is, EPIC-MRA had Terry Lynn Land up in early 2014...it is not a great pollster.
What problem? Land DID have a lead in early 2014, and she lost it. Once she lost her early lead, Epic never had her up again.
Um, this problem happens to just about every MI Republican, losing polling support as the campaign goes on. I think it shows a fundamental problem with MI pollsters.
I'd say it is more of a problem with the campaigns than the pollsters. I like Terri Land and consider her a friend, but she did not have a good campaign staff. The easiest way to lose here is to be perceived as being a weak candidate.
A poll, when done right, is a snapshot in time of a representative sample of the opinion of the electorate. It measures support in this case - 2015 instead of November 2016.
There are paths to win Michigan (and Wisconsin and Pennsylvania for that matter). It's been done on several occasions. It's more challenging in presidential elections, as the dems are good at GOTV in the cities, but there's a lot more to this state than Wayne County.