Wouldn't it make more sense to use most of that money elsewhere?

and it appears HRC is starting to lead

That's definitely not a good sign for him.

Glaringly apparent - how can a candidate win the Democratic nomination ignoring an entire constituency?

Time to hammer him even harder.

This is a worrying decision. If he was the nominee would he fight for Virginia, North Carolina, Florida, Georgia, anything?

McGovern wrote off the whole South, and by the last two weeks of the 2004 campaign, so did John Kerry. No Democrat has ever won the presidency without winning at least 2 Southern states.

trying to win the most delegates in the March 1st primaries. I think Sanders understands he if he only wins Vermont, a lot of his supporters will lose hope and his contributions will dry up. This would mean he would be severely handicapped going forward in states where he has a better chance of winning. So his campaign is gambling on winning a few states in the SEC primary. So they will sacrifice delegates in blow out wins in the South.

I frankly think this coincides with Bernie original intent for entering the race in the first place. I don't believe that early on he believed he could win -though that might have changed later. I think he threw his hat into the ring to use his candidacy as a megaphone to blast out his socialist agenda and to try to pull Hillary's stances on the issues to the left.

The Sanders' campaign strategy indicates to me that he wants to stay in the race as long as he can to be able to continue to use that megaphone as long as possible.