David Sirota just sent me the results of the latest CNN New Hampshire poll. It shows Bernie leads in the two issues most important to the people of New Hampshire - Single Payer Healthcare and climate change.
Here is the poll about which issues resonate most with Democrat voters in New Hampshire:

Here is where Bernie rates in those issues:
Healthcare

Climate change

There's even more good news. Bernie is leading overall in New Hampshire:

Plenty of good news right? You may be asking yourself, but BBM, you said it was skewed. Surely CNN wouldn't skew it in Bernie's favor would they?

No. They would not. However, they can't skew it against Bernie either. Everyone knows Bernie is going to win New Hampshire. To say he isn't goes against everyone's common sense and is what we'd call Explicit Propaganda. Propaganda only works when it is implicit.

The implicit propaganda here is that Bernie is winning, but not by much. However, one only has to look at their own numbers to realize how the polling has been massaged in order to skew the results so that Bernie is only slightly ahead.

Here is CNN's age distribution of their poll:

Note that the age group 18-34 represents 27% of those polled. 35-49 are 23%. The largest group is 50-64 at 30% and finally, the elderly, 65+ at 20%.

But this is the actual age distribution in New Hampshire, per datausa:

Now, we have to do some maths here. First, to get the actual % of each age category, we have to deduct those under age 18. That's 19% of the total, leaving each category as a % of the remaining 81%. Then we need to combine ages 18-24 and 25-34 to match CNN's category of 18-34. The remaining age categories don't perfectly match but we can estimate closely.
The actual percentage of each age group in New Hampshire is:
18-34: 31%
35-49: 22%
50-64: 27%
65+:19% 20%

Now, for visual ease, here is CNN's age distribution again:
18-34: 27%
35-49: 23%
50-64: 30%
65+: 20%

So as you can see, it is slightly skewed against young people aged 18-34. The age group that most identifies with Bernie Sanders. But we are only talking 4% here. It isn't nearly as skewed as most polls that have been touted for the past year.

However, it is safe to say that Bernie picks up 3 of that 4% and Biden/Warren lose it. The other 1% is probably negligble, but let's give it to Warren, just to show how much that affects the results. A small 4% difference.
Before:
Bernie - 21%
Warren - 18%
Biden - 15%
Adjusted for actual age distribution of New Hampshire voters:
Bernie - 24%
Warren - 17%
Biden - 13%

Two things stick out: Sanders goes from a slight lead - in a state it's already considered a given he will win - to a commanding lead. The other thing that sticks out is just how badly Biden is lagging.

Just a little fudging in their polling procedures and CNN has boosted the perception that Biden and Warren are hot on Bernie's tail, when the reality is, Bernie is holding a very strong lead.