1.   The battle has centered mostly on the electoral powerhouses of California and New York, the biggest delegate prizes, and, to a lesser degree, Ohio.

2.   The biggest delegate prize is California.

3.   This state is not part of their strategy, which centers around going after huge delegate prizes in battleground states.

4.   While the exact primary schedule remains somewhat in flux, the change could make New England the first big delegate prize of the campaign.

5.   While Virginia was the largest delegate prize of the day, Washington state also held a primary on Tuesday.