Sanders will probably make it SUPER Tues. But, he has to have a Southern strategy, he doesnt have one.
As Clinton continues to dominate.
Sanders has already been to the South a few times, drawing large crowds. Sanders has a 50-state strategy - he is going to compete (and win) everywhere.
Large crowds =/= electoral success. Obama drew huge crowds in Texas back in 2008 but he still lost the state to Hillary and McCain.
Obama lost the Texas primary very narrowly but won the caucuses and ended up with more delegates IIRC.
As for him losing to McCain, well yeah, he's a Democrat and it's Texas.