If Bernie looses, the exact opposite will happen. He said himself that the race is really about whether or not someone who is not allied with corporate interests can win.
And he's also stated that if nothing else, he wants to stay in as long as possible, cause if he looses too early, it will poison those ideals for future candidates.
All its really shown is Hillary's new idea is to tack to popular issues of more honest candidates because she's just suddenly thought they were good ideas and then take the credit. That's sickening to me.
Look, there are four months to go before the primaries start. That is an eternity in political time. This far out, few people outside of primary states are paying much attention, especially on the Democratic side. What Sanders has accomplished over the summer is remarkable considering he started out with little name recognition, little funding, and a set of policy proposal outside of the political mainstream in this country. Moving to a strong lead in one early primary state, becoming competitive in another, and capturing 20-30 percent support nationally is no small accomplishment. Those accomplishments are especially striking considering the he started as little more than a curiosity that the national media didn't really take seriously and largely ignored.
That being said, Sanders supporters have to face the reality that the Clinton machine is very formidable. Dating back to the moment she conceded the primary in 2008, the rest of party basically lined up behind Clinton as the "next in line". The Clinton name is well-regarded, especially among older (boomer aged) Democrats, and there are many who want the opportunity to vote for the first woman president. The party machinery is strong, especially in primaries. Compared to that, Sanders, as an independent before this Presidential run, faces an a steep, perhaps impossible task.
Still, regardless of what happens, what I hope people take away from his campaign is that, in the face of the long odds, Sanders managed to at least give himself a "puncher's chance". That isn't a good chance, but it is more than almost anyone expected. He gave himself that chance by, one, building a platform of (mostly) good policy ideas that, if you look at them issue by issue, are popular; two, using the internet and social media to mobilize supporters across the country; and three, raising money from many individual doners rather than a comparatively few wealthy ones. Perhaps now isn't the right time and Sanders isn't the right candidate for that strategy to work, but 5-10 years from now: who knows?
I'm not saying give up. Between now and the primaries there will be a million polls for people to drive themselves insane over if that is their inclination. I think everyone in the primary should work and vote for the candidate they believe best represents them. I just think that, in the case of Sanders and what he represents, focusing too much on whether Sanders wins or not risks losing what his campaign has already accomplished and what it can teach future campaigns. A way to guard against that is to be realistic regarding what the Sanders campaign is up against.