Sanders still has a huge disadvantage (but that was said since the very beginning of his campaign, and the middle, and a month or two ago) but the momentum is still going stronger. The thing is that in large parts of the country, large parts of the country are only getting to know who Sanders is.
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From a friend who specializes in media communications and public opinion:
I'm in between the optimistic and pessimistic views. What the pessimistic view misses out on is the trend in knowledge and opinions: against Clinton, for Sanders. Nothing's to say the trend couldn't peter out or reverse, but to take it seriously requires being less pessimistic, or "right-now-realistic", than this critic..
Are the criticisms about the math behind his campaign accurate? Accurate right now, sure, but that's a standard that has continuously failed at predicting the future in this campaign.
People talking about Sanders' "momentum" I wouldn't call it "momentum"...It's about the spread of ideas. We've already seen a massive spread over the past half year - question is where is the saturation point, or where the speed of spread slows down. Most ideas diffuse according to an S shaped curve: slow at first, then rapid growth, then slow again. If the political information which has animated so many people to support a politician attractive only for his ideas is still in the middle of the curve, we can expect Sanders to outperform at remaining primaries. If not, if we're at the top of the curve, then the required information isn't spreading widely and quickly enough, and he'll lose. I can't think of a way to measure this; all we know is that the vast majority of USians know jack shit about politics.. but likely primary voters are probably the most informed of the majority. But "likely" primary voters aren't the only ones: there are all the formerly-unlikely voters who come out to support Sanders. So anyway, my conclusion is optimism of the will, pessimism of the intellect.
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From Robert Mcchesney, pretty much the leading researcher in the political economy of the media:
https://www.reddit.com/r/SandersForPresident/comments/4c5h0y/now_we_know_why_the_corporate_media_npr_the_dnc/
Now We Know Why the Corporate Media, NPR, the DNC and Hillary were Desperate to Kill Off Bernie's Campaign by March 15
Because they all know Hillary is holding a weak hand. She is not popular with voters. I have been doing extensive canvassing with prospective voters in Wisconsin and it confirms what the polls say--Hillary has little enthusiastic support, especially among people under 50. People do not trust her. The more they see her the less likely they are to like her.
Even her hardcore supporters are either people getting paid off by her or expecting jobs for themselves or their friends in her administration. If you go to Hillary's reddit page to see what motivates the handful of people there to be passionate about Hillary, there are almost no issues to speak of. It seems to be mostly angry bitter people who believe it is Hillary's turn, like we live in a monarchy and anyone who challenges her right to the crown is a usurper.
That is not a very powerful selling point to a majority of Democrats, let alone Americans.
Not so with Bernie. When people get to know him, they respect him and support him. Even Republicans tend to like him more than Hillary, by a wide margin. And independents adore him. he has all the momentum and enthusiasm in the race. Hillary is reduced to the absurd position that she relies upon low voter turnout to win primaries and caucuses. That says everything you need to know about how weak she is. Because Democrats win general elections when there is high turnout, the kind Bernie routinely generates.
That is why the establishment had to run him out of the race before these truths became widely known.
They tried. They failed.
Five consecutive wins now where Bernie gets at least 70 percent of the vote. Wow.
Bernie was in single-digits or low double digits in the polls for these five states 9 months ago. Just like everywhere else except Vermont. Now he is winning total blowout victories against the biggest brand name in the Democratic Party if not the nation..
If we had a credible news media, for the next week the discussion would be whether Hillary should withdraw from the race so as to not undermine Bernie's chances in November. The establishment media would obsess with how Hillary, one of the best known politicians in the world, could be demolished in five states in which she she did better in most of them in 2008. Why is she--the putative nominee according to all the "experts"-- going so sharply in the wrong direction?
Alas, we do not have a credible media. But we have survived their offensive and they are running out of ammunition.
All hands on deck for Wisconsin. We win there and it is two weeks of intensive campaigning in New York. Hillary's home state. Bernie won his home state with 86 percent of the vote. Let's see Hillary match that.
If Bernie wins Wisconsin and makes a ballgame of it in New York, he is the leader. If he wins Wisconsin and New York, Hillary is through. Game over.
Any way you slice it, she is on life support from the corporate media right now.
The next 23 days could shape the course of history. Now or never.
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If you want to follow the campaign though, just scroll down this, they post literally all the types of news that pops up
https://www.facebook.com/groups/berniesandersactivists/?fref=nf