The Democratic Party primary delegate allocation rules stipulate that a candidate must get at least 15% of the vote in a state to qualify for any of that state’s at-large delegates and at least 15% of the votes in a Congressional District to get any of that CD’s delegates. In a race like the present one with four or five viable candidates vying for delegates and with Sanders leading in most polls in almost all Super Tuesday states, a shift of a few percentage points above or below the 15% threshold for three or so of the second tier candidates could make the difference between a huge delegate haul and a sizable but not overwhelming delegate haul for Sanders.
Susie and I leave for Paris on March 3rd [!!!] so when we get to our apartment and turn on the TV, we will find out how things have gone down. We will vote here at our retirement home [we are a precinct] before we leave for the airport.