The four main things you did wrong are related to vote counting, media, policy, and your job in the U.S. Senate. If you had done them right you could have worn a flag pin, not worn a flag pin, pierced the thing through your nose, or told Wolf Blitzer to stick it up his ass. Regardless, you would have won.
In the New Hampshire primary, every precinct that counted by hand you won, every precinct that counted with optical scan machines you lost. Maybe that's just the way it went. Maybe not. But you could have had a full recount for a couple of grand and you declined. Yes, I'm aware that you won the primaries, but you ought to have done the recount as a matter of principle. You ought to have demanded recounts in other states, including states you won, as a matter of principle. The people who vote for you want their votes credibly and verifiably counted. It's about them, Senator. It's not about you. We don't care if some corporate shill calls you names. We care whether you'll stand up for our right to vote.
You should have raised the issue in the media and made it part of your campaign in a few ways. First, you should have encouraged election day volunteers, observers, videographers, and exit-pollsters, organized efforts directly or assisted organizations not affiliated with your campaign, and you should have encouraged the media to produce and release unadjusted exit poll results. You should have spent election day setting an example as an observer. Second, you should have made the issue of honest and verifiable elections part of your platform for policy changes. Ideally, you should have supported working toward changes in regulations, laws, and the Constitution to establish an individual Constitutional right to vote and to have all votes publicly and locally counted in a manner that can be repeated and verified if questioned, and a ban on private companies overseeing any vote counting. Third, you should long since have supported ongoing efforts to investigate past questionable elections all over the country.
You should NOT have conceded. You should have immediately requested audits and recounts. You should have announced ahead of time that you were going to do so as a matter of principle. And then you should have gone beyond that and encouraged labor unions to call a general strike and non-unionized workers to join in. Had you gotten the next three strategies right, it wouldn't have come to this.
In terms of media policy, you should have supported free air time and equal substantive coverage on noncommercial public television for all qualified candidates. In terms of action, you should have refused to give a dime of our money to advertisements purchasing back little snippets of our airwaves from, and funding massively, Fox, CNN, MSNBC, NBC, ABC, or CBS. Instead, you ought to have taken all that money and joined forces with other concerned citizens and groups to launch a new, independent, commercial-free, non-profit television / radio / online network that would break the mold by honestly reporting the news 24/7/365, including the news about your campaign. If you had done that, you would have won your election, won future elections for the better candidates for decades to come, and inspired members of the public to support viewer-funded, commercial-free media worthy of a democratic nation. Not a dime of all the money we gave you went to fund serious investigative reporting. Every dime of it should have.
You listened to your advisers who listened to your donors and the corporate media. You did not base your policy positions on the preferences of the majority of Americans, much less the majority of Democrats and Independents.
Yes! magazine recently published at http://yesmagazine.org/purpleagenda a collection of progressive policies favored by a majority of Americans in polls according to which:
64 percent believe the government should provide national health insurance coverage for all, even if it would raise taxes (taking this position would have won you a huge number of voters);
58 percent believe a court warrant should be required to listen to telephone calls (you voted to give immunity to corporations that assisted the president in violating that requirement, and to make matters worse you had promised to vote No and filibuster);
68 percent believe a president should not act alone to fight terrorism without checks and balances of courts and Congress (you said you'd support attacking Pakistan without cover of Congress or the law, thus denying yourself the right to comment when Bush did just that);